BRAND MODEL Chassis KEYWORD SYMPTOM CURE
Sony KP53S65 RA2 A.C. HUM Sony KP53S65. Cust has two complaints. 1. Unit has low level AC hum when using an external amp connected to the variable/fixed or the monitor outputs of the television. The hum is present when the volume on the TV is muted or set to minimum, and the volume of the external is turned up 20%. The hum is quite noticeable at this level. 2. When using the variable/fixed outputs the set will not have left channel output. I had tech disconnect all connections (except to the variable/fixed output) to the rear of the set while in the condition mentioned in the first complaint. After all other inputs to the set was disconnected the CATV connection was the only connection remaining. When it was disconnected the hum disappeared. This indicated the trouble is caused by a "Ground Loop" This condition is caused by the CATV ground is a different potential than the rest of the equipment. This may not be able to be corrected without an electrician checking the customer electrical neutral and ground connections in the customer house wiring. We can simply solve the trouble by having the CATV company installing a "ground breaker" in series with the CATV feed. 2. The no output to the left channel output is caused by a torn trace at the left output connector for the variable/fixed outputs.
Sony KP53V45 RA2 arcing KP53V45 Unit has red tube that is arcing. Tech calling in for Red CRT Approval. CRT is Arcing in the Neck.
Sony KP53XBR45 RA1 arcing KP53XBR45 serial 9012904 Unit Has an arcing Red and green CRT then shuts down. Tapping on the neck of the tube aggravates the symptom Bulletin # 281R1 need to be preformed on this chassis. It will protect the CRT driver board from arc over damage as a result of an arcing CRT. It is suggested to replace both CRT's and perform upgrade on all 3 CRT driver boards.
Sony KP61V15 AP ARCING TV will turn on but the  Front panel LED will continually blink on and off. Unit gets high voltage but has a lot of arcing around the High voltage distribution block. Unit does have sound and has vertical sweep. The chassis is heavily corroded due to the environment. Unit is located next to an open window that receives ocean spray from the surf. After closer inspection tech found the focus screen block assembly  wires were falling off of the assembly. Cleaning the connections with water and thoroughly drying the connections then resoldering them to the block assembly corrected the fault.
Sony KP53V45 RA2 audio KP53V45 No audio. While in the process of servicing the set the unit lost Green and blue have lost convergence. Unit has a defective PS401 fuse and IC403 in the output stage. As for the convergence problem there is a loose connection between the "A" board an the "G"
Sony KP53V45 RA2 AUDIO No audio. While in the process of servicing the set, the unit lost Green and blue convergence. Unit has a defective PS401 fuse and IC403 in the output stage. As for the convergence problem there is a loose connection between the "A" board and the "G".
Sony KP53V75 RA2 audio KP53V75 Serial # 9018895. After the set is on for only a brief period of time there will be a slight Hiss that will come an go in the right channel audio. It can be heard even if the TV is placed in "AUX" mode, with no input the his is noticeable  I have never heard of this symptom but since the television is under warranty and is covered in the S.A.Y.S. program then It would be best that the "A" board be replaced. Note to tech is that he must copy down the EPROM values or the tech will need to re-converge the set from scratch.
Sony KP53V75 RA2 audio KP53V75 unit has no audio. IC404 has audio up to the input of IC404(2&4). Measuring the IC404(7, & 11) which are the outputs of the IC404 finds 1.3, & 32 vdc respectively. Each of these outputs must be exactly 50% of the B+ of IC404(9) which was 32 volts. Unit has defective IC404. TA8216 part # 8-759-246-70
Sony KP53V75 RA2 AUDIO . Unit has no audio. Tech ordered the "A" board under the SAYS program. Cannot get the EEPROM reader to read the data from the EEPROM to transfer the convergence alignment data from the old board to the new board. Suggest the tech check the PS401 fuse. It was open. Suggest tech to change the fuse and audio output IC IC401 instead of replacing the "A" board
Sony KP53V75 RA2 AUDIO Unit has no audio. IC404 has audio up to the input of IC404(2&4). Measuring the IC404(7, & 11) which are the outputs of the IC404 finds 1.3, & 32 vdc respectively. Each of these outputs must be exactly 50% of the B+ of IC404(9) which was 32 volts. Unit has defective IC404. TA8216 part # 8-759-246-70
Sony KP53XBR45 RA1 audio KP53XBR45 serial # Unit has history of the  "GB" board shorting out the switching transistors in the switcher supply. Q1201, & Q1202 short with R1206 opening. By simply replacing the transistors and C1210, C1211, C1212, and C1213 the power supply will run for 3 to 5 weeks then short the switching transistors again. The customer explained that they lost audio while the set was playing. The sound quality was normal up until the event that took place to short the switching transistors. This has happened 2 times. Tech is wondering if there are any other case histories regarding this symptom. Suggest the tech look at replacing the following components D1204, D1205, D1209, D1208, D1206, D1207, D1210, & D1211. These are the limiting diodes and have a generic # 1SS133T. In addition there are 2 zener diodes in the secondary of this power supply that are used as protection They are D1213, and D1214. They will act like a crowbar across the + or - 18 volt source in the event the voltage increases beyond the avalanche limits of the zener diodes. In addition to the components I would suggest the tech replace IC1201
Sony KP61XBR45 RA1 AUDIO KP61XBR45. unit has no audio.. When an external amp is connected to the Line outputs the set will produce line level audio to the external amp. Tech is not getting B+ to any of the Audio output IC's on the "K" board. Apparently the "GB" board is not providing the B+ necessary for the audio to turn on.  Tech needs to check the condition of the 4 fusible resistors in the +18 & -18 volt supply. R1217, R1273, R1297, R1295
Sony KP61XBR48 RA1 AUDIO Sony KP61XBR48 Distorted audio only when using the Surround mode or any high end audio feature. The sound is a raspy approx. 100 ~ 150 Hz buzz. Call tech back regarding the IC or circuit involved with this expanded audio features. Unit in IC304( 8-759-248-74) Mixer IC305 (8-759-341-23) all located in the AA board complete board is A-1297-622-A
Sony KP53V80 RA3 banding KV53V80 serial 915183. Unit has banding of bright areas across the screen that becomes larger as the set plays. This phenomena is caused by one of the IK buffers on the CRT driver boards. The condition should be treated by replacing All IK buffers and replacing the Spark Gaps The following transistors are the IK buffers Q733{CG board} Q764{CB board} & Q706{CR board). They are hidden by a heat sink for the Video output transistor. Tech needs to order the spark gaps for each CRT module and replace the defective IK buffer. IK buffer number is 8-729-200-17 and the spark gap is 1-517-729-31 Locations for Spark gaps are SG702, SG732, SG762.
Sony KP53V75 RA2 black lines KP53V75 Unit has black lines that appear across the picture. Further talking to the customer reveals that they were wondering why when they operated this television it caused interference on other televisions in the house. This set appears to have a slight high voltage arc or corona discharge that is causing interference to other televisions. This arc is also causing problems in the video circuit which is why the tech and the customer are seeing it on the screen of this television. Tech needs to isolate the High voltage block, and CRT from possible suspect by one by one disconnecting them from the high voltage source. The only indicator the tech can use is another television and look for the interference to disappear, since the Sony will not allow the raster to appear if any one of the tubes is disconnected. After the test the it was determined the  flyback was causing the problem. The radiated noise reduced but was did not disappear. It was recommended to replace the "G" board since the unit was covered under the SAYS program.. The G board corrected the symptom.
Sony KP53S35 RA2 blows fuses Sony KP53S35 RA-2 chassis. Unit looses PS601 and PS602 intermittently Factory upgrade. Replace C815, C897, 858, & 889 from a 1000mfd @ 35 vdc to a 470 md @ 35 vdc.
Sony KP53S35 RA2 blue screen KP53S35 serial number 9022580  Unit  has blue screen swapped. Tapping on neck of blue CRT gives flashes of heave blue horizontal lines then returns to normal B&W Tracking. Unit will need a Blue CRT 8-733-497-05
Sony KP53V80 RA3 BRIGHT RASTER KP53V80  Serial 9008991 Once the set is turned on the raster will appear as a bright screen with video but the brightness is intense. There are no retrace lines. . The set does not have any On screen display, sound OK. Q764 was defective
Sony KP53V80 RA3 BRIGHT RASTER KP53V80  Serial 9012671 Once the set is turned on the raster will appear as a bright screen with video but the brightness is intense. There are no retrace lines. Tech replaced the "A" board which did not cure the symptom. The set does not have any On screen display, sound OK. This unit had a leaky Q706
SONY KP53V80 RA3 BRIGHT RASTER KP53V80 9001186 Unit goes to a bright screen then the set may shut down or just operate with an extremely bright picture but no retrace lines. Unit has no "ON Screen Display" and the sound s OK Monitor the cathodes of each CRT at the instant of turn on. All cathodes were close to 186 volts. But as soon as the raster appeared the voltage dropped to 89 volts. This indicates the CRT's are in saturation. During this test the 200 volt source was still is running nearly 200 vdc.The IK lines are causing this problem. Measuring the IK line at the "CG" board at CN731(1) we measured 5 volts DC as soon as we turned on the set. After the picture appeared the voltage did not change. (NOTE: on a working set this voltage should be near Zero volts as long as there is "0" beam current. Each cathode had a normal IK pulse of 38 volts. The IK Buffers on each board are very hard to get to so another plan was develped to check these devices. The following transistors are the IK buffers Q733{CG board} Q764{CB board} & Q706{CR board). They are hidden by a heat sink for the Video output transistor. This unit had a leaky Q706.
Sony KP53V80 RA3 BRIGHT RASTER KP53V80 Serial 9000364 Once the set is turned on the raster will appear as a bright screen with video but the brightness is intense. There are no retrace lines.  The set does not have any On screen display, sound OK. Q733 defective
Sony KP53V80 RA3 BRIGHT RASTER KP53V80 serial 9004624. Once the set is turned on the raster will appear as a bright screen with video but the brightness is intense. There are no retrace lines.  The set does not have any On screen display, sound OK. Monitor the cathodes of each CRT at the instant of turn on. All cathodes were close to 186 volts. But as soon as the raster appeared the voltage dropped to 89 volts. This indicates the CRT's are in saturation. During this test the 200 volt source was still is running nearly 200 vdc.The IK lines are causing this problem. Measuring the IK line at the "CG" board at CN731(1) we measured 5 volts DC as soon as we turned on the set. After the picture appeared the voltage did not change. (NOTE: on a working set this voltage should be near Zero volts as long as there is "0" beam current. Each cathode had a normal IK pulse of 38 volts. The IK Buffers on each board are very hard to get to so another plan was develped to check these devices. The following transistors are the IK buffers Q733{CG board} Q764{CB board} & Q706{CR board). They are hidden by a heat sink for the Video output transistor. This unit had a leaky Q733.
Sony KP53V80 RA3 BRIGHT RASTER KP53V80 serial 9007644 Once the set is turned on the raster will appear as a bright screen with video but the brightness is intense. There are no retrace lines.  The set does not have any On screen display, sound OK. defective Q764 Is leaky
Sony KP53V80 RA3 BRIGHT RASTER KV53V80 serial  9008877 After the set is turned on the raster will appear as a bright screen with video. But the brightness is intense. Tech replaced the "A" board which did not cure the symptom. The set does not have any OSD either Monitor the cathodes of each CRT at the instant of turn on. All cathodes were close to 186 volts. But as soon as the raster appeared the voltage dropped to 89 volts. This indicates the CRT's are in saturation. During this test the 200 volt source was still is running nearly 200 vdc.The IK feedback lines are causing this problem. Measuring the IK line at the "CG" board at CN731(1) we measured 5 volts DC as soon as we turned on the set. After the picture appeared the voltage did not change. (NOTE: on a working set this voltage should be near Zero volts as long as there is "0" beam current. Each cathode had a normal IK pulse of 38 volts. The IK Buffers on each board are very hard to get to so another plan was develped to check these devices. The following transistors are the IK buffers Q733{CG board} Q764{CB board} & Q706{CR board). They are hidden by a heat sink for the Video output transistor. This unit had a leaky Q706.
Sony KP53V85 RA2 BRIGHT RASTER KP53V85 Unit has bright screen with retrace lines. CRT socket "CR" board has a hole burned through it. Previous tech out simply ordered All three CRT driver boards and the 3 CRT's because of a burn in the center of the tube. Tech has no 200 vdc source from the G board \. The 1 ohm resistor is open from the D520 200 vdc rectifier to the CR board.
Sony KP53S35 RA1 CHROMA Sony KP53S35 . Unit has poor chroma of the main picture. It appears like a loss of chroma phase lock of the 3.58 internal oscillator. The frequency is unstable. Recommend tech resolder the connections on X301, C305, C310 and R322 in the AFCFL circuit of the Jungle IC. This is IC301 near pins 1, 2, and 3.. Unit had broken connection on R322.
Sony KP46S25 RA1 color wrong The picture turns a reddish or pinkish cast after 20 minutes This is intermittent. Pix flashes upside down then back to normal. This takes about 20 minutes but can be accelerated by heating the IC301 with a heat gun. defective Jungle IC chip IC301
Sony KP46S25 RA2 color wrong KP46S25 serial 9026954  Unit has no output from the blue CRT. Swapping the green to the blue socket  does not transfer the trouble. Unit will need the Blue CRT. G2 voltage running at 33 vdc. On Blue CRT
Sony KP53EX20 AP color wrong KPR53EX20  serial .8001436 unit has poor black and white tracking. Tech needs to know how to get into the internal adjustments to adjust drive to each CRT There are no drive controls to any of the CRT. The only adjustment that can be made is G2 and focus. All other adjustments are automatic through he IK circuit. Suggest the tech look at each tube faceplate and inspect the phosphor for the normal registration burn. If the tubes are coffee color in the registration area It may just mean we have a set with a lot of hours on the CRT and they simply cannot produce enough light to achieve normal white balance tracking.  According the tech the tubes were very dark in the registration area.
Sony KP53V65 RA2 colored shadows KP53V65 Unit has purple and cyan shadows on the screen. These shadows are very pronounced when an all white pattern is shown on the screen Unit has CRT Burn caused by a DVD player or a CATV marquee that was allow to stay on the screen for an extended period of time.  This apparently is caused when the DVD player has a disk in it and not playing the disk, a LOGO of the disk movie will appear on the screen. On a conventional direct view television this is not a problem if the display is left on the screen for several hours. But this is not true with projection televisions. Sever damage will result if a stationary image if left on the screen for prolonged period of time. This is  especially true with Sony when it is in the external Video input mode and the DVD/VCR is OFF. All Sony's will say "VIDEO" printed on the screen. In 1 to 2 hours the tubes ion the projection television will be destroyed requiring them to be replaced. Replacement cost is over $800.00. Be aware, Do not leave any Projection television "ON" with a stationary picture. Just like screen savers are used to keep the computer monitors from leaving an imprint of an image on the picture tube. This unit will need all 3 CRT
Sony KP61V45 RA2 colored spot KP61V45 Unit has a purple dot in the center of the picture. Can be seen in when there is a white screen. There is a burn in the center  of the green tube. Tech will need to replace the GREEN CRT. Tech also needs to follow the directions for the CRT module upgrade Bulletin # 380. Addition of a 1SS83TD diode between (Anode)@R708 and cathode to IC (pin 6). In the event the IC is not available the CRT driver board is. CRT generic # is 07MAC2(G) The possible subs are 8-733-494-05, 8-733-561-05, and 8-733-577-05.
Sony KP53XBR45 AP control panel KP53XBR35 Unit has symptom of when the volume up is activated the channel down is activated instead. All other buttons act normally on this analog string. Tech did not check the other analog string which is where the "Menu, +, -, and display key. There are two identical analog keyboard voltage dividers attached to the KSENS0 & KSENS1 lines to the microprocessor. The should act identical in operation. The switches that acts as the volume up was swapped with the Menu key switch. The volume switch began working correctly and the menu stopped. The switch was replaced and now it works correctly.
Sony KP53XBR45 RA1 control panel Sony KP61XBR48 When the power button is pushed in the set will shut off then turn back on again The power on off switch is pushed the logic low that gets sent to the CPU is not staying low. It get corrupted with a bounce caused by the contact in the Power on -off switch. This fix is to install a 2.2 mfd capacitor across the on-off switch to de-bounce the contacts.
Sony KP61XBR48 RA1 control panel Sony KP61XBR48 When the power button is pushed in the set will shut off then turn back on again The power on off switch is pushed the logic low that gets sent to the CPU is not staying low. It get corrupted with a bounce caused by the contact in the Power on -off switch. This fix is to install a 2.2 mfd capacitor across the on-off switch to de-bounce the ON/OFF switch/
Sony KP41T25 RA2 Convergence KP41T25.. Red convergence will not write to memory. When convergence is properly aligned red horizontal lines will migrate up or down after time suggest that the red sub deflection yoke plug be removed. This action eliminates the influence the convergence correction circuitry has over the Red CRT. Once this was done the TV was turned on again and the cross hatch was placed on the screen. One of the intersection points of the Red cross hairs was marked with a post-it note. The TV was allowed to run for 15 minutes. After 15 minutes the red cross hair mover 1/4 inch down the screen. This indicated the CRT was defective. The only deflection the RED tube had was the deflection that feed all the tubes. If vertical center were to drift it would drift on all the CRT not just the RED CRT.
Sony KP41T65 RA2 Convergence Sony KP41T65. Cannot converge set. Technician replaced all microprocessors, EPROM, and Convergence output IC's without effecting a cure I had tech check the data pulses from the Microprocessor to the DAC chips. One of the Data chips was only 3 volts peak to peak Not the 5 volts necessary to communicate to the DAC. Problem was a leaky zener diode D803.
Sony KP43T35 RA2 Convergence This TV had a problem with the CRT leaking which were replaced. After replacement the set developed a failure in the convergence Output IC's. Replacing the IC's did not solve the convergence error. It seems that Horizontal convergence was fine. It was Vertical that had no correction signals for R, G, or B. Checking the Vertical wave generator IC801 we found that it had no vertical correction signals from IC801(4,5,6,& 7). Yet it has a good input at IC801(1) Both B+ & B- were OK on Pins 3 & 9 respectively. Further checking on Pin 18 found "0" volts. It should have been -1.6 volt. Unit had a shorted D820 a 3.3 volt zener diode.
Sony KP46V15 AP Convergence KP46V16.  Unit does not have control of Red horizontal centering Tech needs to look at the output of IC506(5) for the Red horizontal centering. This IC is the Bus Decoder that decodes the data to 4 separate outputs. Each output is for Red H & V, B H & V Centering. Since the Centering is fine for the B Horizontal and poor for red it is suggested too replace the IC. New IC corrected the symptom.
Sony KP46XBR25 Projection Convergence Unit has an intermittent "Out of convergence" picture. But now the unit is completely dead. Tech needs to replace the Q603, Q614, R604, D605, both convergence IC's. D605 is shorted.
Sony KP53V15 AP Convergence KP53V15 serial 9011915 Unit was serviced by another service vendor. Unit has a pulsating red convergence . Tracing the pulsating we find the Output of IC506 has a pulsing on it that is coincident to the pulsing on the screen.  Unit has a defective IC506
Sony KP53V15 AP convergence Sony KP53V15 AP chassis. This unit will not allow the customer convergence centering to function. Tech needs to know where the electronic centering takes place. Electronic centering is accomplished by the customer using the remote. Serial data codes will instruct the bus decoder IC506 to change the D.C. offset voltage to IC551 on "V board" Defective IC551.
Sony KP53V15 AP convergence Unit has a pulsating red convergence . Tracing the pulsating we find the output of IC506 has a pulsing on it that is coinciding to the pulsing on the screen.  Unit has a defective IC506.
Sony KP53V45 RA2 convergence KP53V45 serial 9011383. Unit has no convergence control.  All dimensions are way out of adjustment and have no effect when adjusting the values of the convergence parameters. Tech needs to check the protect diodes at the input of the G board. D809, D810, D807, D808. These diodes are the upgrade listed in the latest revision of TVB380.
Sony KP53V75 RA2 convergence KP53V75 Unit has and intermittent  Unit had a  loud pop and then the set lost top and bottom convergence , It stayed that way for twp days according to the customer then it popped again and the problem disappeared and the set returned to normal but it lost sound. 1 day later the sound returned and for the past 6 days the set is playing OK. Tech need to check the CRT sockets for the presence of the safety diodes in the on the cathodes of the power supply.
Sony KP53V85 RA3 Convergence How to troubleshooting Auto-Focus error codes 
Refer to service manual p. 52 for explanations of auto-focus error codes. Also check the DC voltages on the following A-board components while displaying a white raster (the correct voltages are on the schematic): IC804, Q802 - Q805. Abnormalities may  be caused by damaged D801 through D808. If any of the diodes, transistors, or ICs listed above are found to be defective replace them and prevent future damage by making the following changes: R830, R849, R850, R851 from 100 ohm to 470 ohm (1-216-041-00). Also change R905, R906, R907, R908 from 100 ohm to 1K ohm (1-216-049-00).
Sony KP57HW40 RA6 Convergence Converegence drifting requiring to be auto converged each time the set is turned on. On the AD-Board they have had problen with IC1606 this will cause problems with flash focus not working and the PJE mode in service menu not to be there. Also if the lines don't move when convergening and the voltage to the STK's is good and no blown fuse links to yoke IC1608 had been causing this problem. I.C.1606 - 8-752-925-71 and I.C.1608 - 8-759-829-87
Sony KP57HW40 RA6 Convergence This TV had excellent convergence but if a bright red image needed to be displayed the convergence for red moved about a 1/4 of an inch to the left for the entire picture. Had tech remove all 3 convergence yoke connectors CN8010, CN8011, CN8012 to eliminate all influence from the convergence system. We  marked where red  lines land on the screen using a post-it-note.  When the red object appeared again in the video the red convergence move to the left again. It was determined the trouble was caused by the CRT. The CRT was replace and it corrected the symptom.
Sony KP61S70 RA3 Convergence KP61S70  serial  9007325 Unit is 1 day old. The customer claimed the set popped then the set lost convergence control for blue horizontal lines. This mean the vertical sub deflection circuit is malfunctioning On this chassis all of the sub deflection yokes are protected by fuse links. The fuse for the blue vertical sub deflection is PS1506 an it's open. It is a 2 amp device. Part # 1-533-593-11
SONY KPR46EXR15 AP Convergence KPR46EXR15 Unit has no control over the Red or blue Horizontal centering for the customers convergence adjustment. Suggest the tech check the possibly that a problem on the "A" board IC506 may be causing the trouble. This IC controls both the horizontal and vertical centering of the red and blue CRT registrations. The Horizontal correction voltages are simply a DC voltage that is fed to the "V" board. The "V" board houses the IC's and drivers that will change the DC offset voltage that effects the Horizontal centering. However these circuits were operating correctly. It was determined that IC902 was running warmer than normal. Unit had defective IC902 CXA1268P the Wave generator was defective.
Sony KP43T35 RA2 Convergence This TV had a problem with the CRT leaking which were replaced. After replacement the set developed a failure in the convergence Output IC's. Replacing the IC's did not solve the convergence error. It seems that Horizontal convergence was fine. It was Vertical that had no correction signals for R, G, or B. Checking the Vertical wave generator IC801 we found that it had no vertical correction signals from IC801(4,5,6,& 7). Yet it has a good input at IC801(1) Both B+ & B- were OK on Pins 3 & 9 respectively. Further checking on Pin 18 found "0" volts. It should have been -1.6 volt. Unit had a shorted D820 a 3.3 volt zener diode.
SONY KP41T65 RA2 CRT KP41T65 serial9515238 Tech needs CRT CRT...Tech is receiving the wrong tube the most recent tube to be received is  A-1501-369-A which is a blue CRT The first wrong tube was   A-1501-373-A also a blue CRT.  Tech is getting the part number off of the tube frame and not out of the service manual. As long has he is using that number he will always get a -blue CRT.
Sony KP41T65 RA2 CRT KP41T65 9515238 Needs Green CRT. Tech originally ordered the Green CRT by using the tag on the original tube which is A-1501-372-A . What he received is a A-1501-373-A which is a blue CRT. I'm not sure who subbed the part but the correct part number is the A-1501-372-A. There are no subs for this tube at this time.  According to Sony World Parts center they have them in stock and can be shipped anytime
Sony KP41T65 RA2 CRT KP41T65 serial Needs blue CRT. Tech originally ordered the blue CRT by using the part number from service bulletin # 359R1 . What he ordered is a 8-733-539-05. is a A-1501-373-A which is a blue CRT. The correct part number is the A-1501-373-A. According to Sony World Parts center they have them in stock and can be shipped anytime
Sony KP41T65 RA2 CRT KP41T65. The tech is trying to replace the Red CRT but has received the wrong tube. Tech ordered from the service manual a 8-733-539-05. But it is the wrong mounting structure, and will not fit in the opening of the. Called Sony World Parts center and obtained the correct part number for the tube. Currently there is no way to find out what tube is in the set by simply looking up the number in the manual. The generic number must be compared to a new list the Sony Part has. We were lucky to find the part number on the original CRT of A-1501-367-A
Sony KP46C36 RA2 CRT KP46C36 Serial 9005538  . Unit has a burn in the blue CRT. The unit has an excessive afterglow once the television is turned off. The after glow is only blue. No other colors have this afterglow. Tech will need Replacement CRT07MAC02B
Sony KP46S15 RA1 CRT KP46S15 serial 9013364 Unit has leaking CRT Unit has convergence. Both red and green CRT are leaking coolant leak. Damage is localized to just the CRT's. Unit will need replacement Red and green CRT's
Sony KP46S15 RA1 CRT Unit has leaking CRT. Unit has convergence. Both red and green CRT are leaking coolant. Damage is localized to just the CRT's. Unit will need replacement red and green CRT's.
Sony KP46S25 RA1 CRT KP46S25 serial 9025552. Blue CRT leaking on "E" board. Also the red and green tubes are showing signs of seal rupture around the tubes. The blue tube has a rupture in the Expansion chamber. Unit needs three CRT's and "E" board. (A-1343-248-A) which is NLA.  Asking tech to go out and get the "E" board to clean it in shop environment.
Sony KP46S25 RA1 CRT KP46S25 Serial# 9010029 Unit s blue CRT leaking. No board damaged by the leaking. Unit has to have the blue CRT replaced
Sony KP46S25 RA1 crt KP46S25     serial#  9021406     all  3  CRT's    leaked    damaged  to
E-BOARD  
Unit needs Blue CRT and attempt to clean the "E" board if possible
Sony KP46S25 RA2 CRT Unit has no output from the blue CRT. Swapping the green to the blue socket  does not transfer the trouble. Unit will need the Blue CRT. G2 voltage running at 33 vdc on Blue CRT
Sony KP53S25 AP CRT KP53S25 Serial 9002282 Unit has burned tubes caused by the word "VIDEO" is burned on the screen This unit has 3 defective CRT's that have letter burns on them. All three tubes need replacement.
Sony KP53S25 RA1 CRT KP53S25 serial 924413 Unit has leaking blue CRT OK to order the E bard and CRT.
Sony KP53S25 RA2 CRT KP53S25 serial 90222755 Tubes are burned from the PIP screen being on the screen for an excessive period of time OK for CRT replacement
Sony KP53S35 RA2 CRT KP53S35 Unit has a LOGO of Bugs life burned into the red CRT. Unit will need the Red CRT. This should be an ICB to the store since this was damage caused by leaving a DVD player connect to the set with the Bugs Life CD in side. When not playing, and in the standby mode the logo will appear. Since the logo never moves and over a prolonged period of time the CRT's can be permanently damaged with an image burn in the phosphor
Sony KP53XBR45 RA1 CRT KP53XBR45     serial# 9012936 Blue  CRT  leaked    dropped  over   E-board Unit needs Blue CRT and attempt to clean the "E" board
Sony KP53XBR45 RA1 CRT KP53XBR45.Serial#  9015424 Unit had two CRT's Red and Blue leaked on the original "E" board prompting their replacement. After changing the CRT's and the "E" board it was discovered the set had a symptom of immediate shut down. When checking IC901(1&13) and IC903(13) we had no positive voltages that would cause a high voltage protect shut down. At no time did we ever get high voltage or Horizontal drive, for the High voltage output, Q801. However Q505, the horizontal driver for the horizontal output always had drive to it.  When the first technician replaced the original circuit board it was discovered that he did not transfer the jumpers on  CN804. There must be three jumpers on this connector otherwise the set will never get high voltage. CN804(1&2), CN804(3&4), CN804(5&6). Unit needs these three jumpers to route the 2 ABL circuits, .Horizontal drive pulse. Replacing these jumpers restored normal operation.
Sony KP53XBR45 RA1 CRT KP53XBR45 serial 9032096. Unit has burned CRT's again. CRT were replaced in October of 1998 because of a bar burned across the face plate. Now the same bar is burned across the face plates of green and blue CRT's. This is caused by the stock market channel and or CNBC banner at the bottom of the screen This customer was warned last year this would be a 1 time replacement for this symptom. They were warned that continuous display of a stationary image will burn any CRT especially a projection television.
Sony KP61XBR200 RA4 CRT Unit has all three CRT burned from running at the store. Unit was sold as a open box item with the tubes already burned. Once all the tubes were installed the tech could not set the Green. Green.  During the setup of the Green CRT the unit gave an Error 80. This error code is an indication the GREEN SKEW is off. There are no electrical adjustments for green skew. What need to be moved is the mechanical rotation of the deflection yoke.  The auto convergence is an very unforgiving if the yoke has any tilt at all.
Sony KP41EXR96 ANU-1 Dead Sony ANU-1 chassis. Unit has defective horizontal output transistor Apparently nothing else is damaged with this chassis. However if the horizontal output is shorted after several hours of operation. Unit has defective horizontal driver transformer and driver transistor. Leads on driver transformer show signs of oxidation
Sony KP41EXR96 AP Dead .KP41EXR96 unit dead. Will not power up. But will turn if the convergence board is disconnected. Customer claimed, "Picture separated in to colors then the TV went out." No 15 or -15 volt supply….Diode D605 shorted. Feeds all devices on the + and - 15 volt supply line. Note the replacement Dual diode be sure it is a common ANODE device. 
Sony KP41EXR96 AP Dead .KP41EXR96 unit dead. Will not power up. But will turn if the convergence board is disconnected The 15 or -15 volt supply was missing….Diode D605 shorted. Tech should check all devices on the + and - 15 volt supply line as well as the 4 post regulators on the "D" board. Tech found a shorted C1742 located on the "D" board. It connects between the -15 and + 15 regulators IC905, IC906.
Sony KP41T15 RA1 Dead KP41T15 serial 9012082 Unit has a burned hole in the "D" around  R1625, R1627, R1629, & R1621 Board will need to be replaced. Hole is approximately 1 inch square hole under IC1601 the suppport the current limiting resistors. Board number is A-1346-296-A and is no longer available from Sony World parts center. An effective repair was to cut a square hole in the board material large enough to remove the chared area. Another piece of perf board material was cut and shapped to fit snuggly in the area of the old board that was cut away. All new resistors were installed and hardwired in to original specifications. Expoxy was used on the newly inserted board material to fix it in position.
Sony KP41T15 RA1 Dead KP41T15 Unit is Dead. Was hit by a power surge D655 was defective. Unit still will not power up after the device was replaced All power supplies are normal in operation Unit has Horizontal sweep when checking the Q505(C) we have over 900 v peak to peak . We do not have High voltage or high voltage drive to Q801(B) or Q810(B) find no horizontal drive. Checking the HV protection circuit finds the IC902(1) is sitting at 6.2 volts. This is because IC902(7) is higher than IC902(6). This is attached to the OCP circuit. It is conceivable the flyback is shorted on this due to the fact the 135 vdc OCP line is being triggered.  Unit did have a shorted flyback transformer
Sony KP41T15 RA1 Dead KP41T15. Unit has coolant leak which destroyed the "E" board. Unit will need a replacement "E" board.
Sony KP41T15 RA1 Dead Unit is Dead. Was hit by a power surge.  D655 was defective. Unit still will not power up after the device was replaced All power supplies are normal in operation. Unit has Horizontal sweep when checking the Q505(C) we have over 900 v peak to peak . We do not have High voltage or high voltage drive to Q801(B) or Q810(B) find no horizontal drive. Checking the HV protection circuit finds the IC902(1) is sitting at 6.2 volts. This is because IC902(7) is higher than IC902(6). This is attached to the OCP circuit. It is conceivable the flyback is shorted due to the fact the 135 vdc OCP line is being triggered.  Unit did have a shorted flyback transformer.
Sony KP41T25 RA1 Dead KP41T25 serial 9003158. Unit is dead. All three tubes are leaking. Unit has been leaking for quite a while. The "E" board is heavily corroded  and cannot be sufficiently cleaned. E module and all 3 CRT's must be replaced.
Sony KP41T25 RA1 Dead KP41T25 serial 9006330 Unit is dead. Further checking has discovered the "E" board has a large hole burned through the board caused by a coolant leak from one of the CRT
Sony KP46C36 RA2 Dead KP46C36 serial  9010238. Unit has shorted horizontal output transistor for the third time. All three CRT's have been replaced two months ago. All has been well up to this point. The set failed again now we are faced with changing the CRTs again but we are at this point are going to replace the "G" board in its entirety Unit has shorted horizontal output transistor. "G: board must be replaced as a complete assembly. Also all three CRTs are burned again.
Sony KP46C36 RA2 Dead KP46C36 serial 9002356. Unit is dead. C608 the main raw B+ filter capacitor is vented along with IC6601 shorted. It apparent the television either had a significant A.C. line voltage surge or C608 just took this time to blow. Either way the tech should replace C607, & C608 along with IC601.
Sony KP46S15 RA1 Dead KP46S15 serial 9013723 DEAD. Unit has leaking CRT's. Both red and blue CRT's are noticeably leaking with the green showing signs of moisture around the expansion chamber Unit will need replacement CRT and the convergence output IC's.
Sony KP46S15 RA1 Dead KP46S15. Unit has an over heated stand by transformer. The 20 volt source is running at 3 volts. I had tech disconnect the connectors to the "M"  board M  CN653 on the "G" board. This removed the load on the 20 volt stand by and let the 12 volt stand by to rise to near 20 volts too. It is possible we have two regulators bad IC652 and IC001. IC001 may have been damaged by too much voltage on its input because of a defective IC652. OR there is a sever load on the output of IC001 the 5 volt standby on the "M" board where the 12 volt stand by enters on connector CN053 Pin 1 then to the IC001 a post 5 volt regulator. There is also a 1000 mfd @ 6.3 vdc on the output of the 5 volt post reg. Suggest the tech bring out both regulators and the capacitor C002 as a precaution.  As a idea this board can be worked on outside of the
Sony KP46S15 RA1 Dead DEAD. Unit has leaking CRT's. Both red and blue CRT's are noticeably leaking with the green showing signs of moisture around the expansion chamber. Unit will need replacement CRT and the convergence output IC's.
Sony KP46S15 RA1 Dead Unit has an overheated standby transformer. The 20 volt source is running at 3 volts. I had tech disconnect the connectors to the "M"  board M  CN653 on the "G" board. This removed the load on the 20 volt stand by and let the 12 volt stand by to rise to near 20 volts too. It is possible we have two regulators bad IC652 and IC001. IC001 may have been damaged by too much voltage on its input because of a defective IC652. OR there is a severe load on the output of IC001 the 5 volt standby on the "M" board where the 12 volt stand by enters on connector CN053 Pin 1 then to the IC001 a post 5 volt regulator. There is also a 1000 mfd @ 6.3 vdc on the output of the 5 volt post reg. Suggest the tech bring out both regulators and the capacitor C002 as a precaution.
Sony KP46S15 RA1 Dead Unit will not turn on. At no time can a "Click" be heard from the "G" board when the power is applied or when the power is turned on. I had the tech measure the Standby B+ at the input of IC652(1) The voltage should be 24 vdc. We only had 9 volts. Checking with an oscilloscope we found 22 volts peak to peak on the input of the regulator. Unit had defective C667 a 470mfd@ 35 vdc. Replacing the capacitor corrected the symptom.
Sony KP46S26 RA1 Dead KP46S26 Serial 9003745. The set is completely dead All three tubes are leaking. Coolant leaking on "E" board.
Sony KP46S55 AP Dead KP46S55 serial 9104007  Unit is a dead set Unit has an extremely hour glass picture. Q508 getting very hot. Tech needs to check the B+ on the emitter of the Horizontal output. Tech will need to check the areas around the Q508 and it's drivers. It was found the voltage was normal but. Q508(C) was at -106 vdc. Further visual inspection on the driver Q507 found ring fractures in the solder connections in this circuit.. While the voltages were being measured the set began to operate correctly.
Sony KP46S55 AP Dead Unit is a dead set. Unit has an extremely hour glass picture. Q508 getting very hot. Tech needs to check the B+ on the emitter of the Horizontal output. Tech will need to check the areas around the Q508 and it's drivers. It was found the voltage was normal but Q508(C) was at -106 vdc. But further visual inspection on the driver Q507 found ring fractures in the solder connections in this circuit.. While the voltages were being measured the set began to operate correctly.
Sony KP53S35 RA2 Dead SONY KP53S35 RA-2 chassis. Unit is dead. Tech ordered Q601 in the "G" board power supply section. No change in the symptom. After replacement, voltage checks indicated the E2, and B2 voltages at IC601 were 340 volts. E1 and B1 were always "0". One of the soft start resistors, R614 was open. R612, R613, R614, & R615 are responsible for the initial start up of this power supply.
Sony KP53V15 AP Dead Unit is dead. Will not turn on. Just shuts down Q811 shorted. Tech replaced the transistor with a 2SD188. Tech checked the distribution of high voltage for pin holes in the lead dress. Nothing was found. The transistor did not overheat and he let it run for 45 minutes. Suggest the set run for a while and see if it shorts again. All looks well in its operation.
Sony KP53V15 AP Dead Unit was dead. Power supply was damaged by short circuit in 1 or more of the convergence output IC's. The customers complaint started out with the convergence alignment shifting out on the sides, then the set went dead. Checking the "D" board (convergence pcb) found will found 1 fuse open (could have been both).  Further inspection found will find 2 or more resistors (R1729 & 1808) burnt black beyond recognition. DO NOT overlook any other shorted or open parts in the power supply or the "N" Board especially D605 the -18 vdc dual diode. This is all I have ever found..*replace both IC's don't create a possible Call back, make it a habit.**you'll find them either leaky, open or shorted but don't overlook anything... The cure that I have found on a couple of occasions are as follows: D Board;---- F901 or F902  = 3.15 AMP 250V FUSES OPEN------------  IC 1704/1705  = STK4278L  POSS. SHORTED REPLACE BOTH*-------
"D" BOARD R1729 & 1808 = 1 OHM .5 WATT RES.----------------BURNT Q603 OR 614 = 2SC4582TRANSISTOR  1 OR BOTH SHORTED--------------"G" Board; D605 = 8-719-988-31  DIODE**----------------- D650= 8-719-160-81  DIODE-----------------D604 = 8-719-510-09  DIODE**-----------Q616= 8-729-017-05  TRANSISTOR**----------D616 = 8-719-025-81  DIODE**
Sony KP53V75 RA2 Dead KP53V75. Unit is dead. Will not start up. Just has the flashing red LED on the front of the set. Disconnecting the connector CN501( which removes the 200 vdc load created by all 3 CRT drive modules does not allow the set to turn on. Tech did not measure any  voltages on the "G" board. These must be confirmed before we can possibly know where to go looking for what might be wrong. It is possible nothing is shorted in the power supply and we has an open start up resistor in the base circuits of IC601. Tech needs to check R609, R610, R611, R612. all are 220K and have been known to open causing a "Dead Set" condition.
Sony KP53V75 RA2 Dead Unit is dead. Will not start up. Just has the flashing red LED on the front of the set. Disconnecting the connector CN501( which removes the 200 vdc load created by all 3 CRT drive modules) does not allow the set to turn on. Tech did not measure any  voltages on the "G" board. These must be confirmed before we can possibly know where to go looking for what might be wrong. It is possible nothing is shorted in the power supply and we has an open start up resistor in the base circuits of IC601. Tech needs to check R609, R610, R611, R612. all are 220K and have been known to open causing a "Dead Set" condition.
Sony KP53XBR45 RA1 Dead KP53XBR45 serial number  9017123 Unit is dead. The set went up in smoke. Customer unplugged the set and called for service. Unit has burned  A board on the corner 1E coordinated. This circuit is for the dynamic focus output and the 3 horizontal deflection yoke drives. The corner is completely burned away from the A board. Tech will need a replacement AA board A-1297-540-A.
Sony KP57HW40 RA6 Dead   Q8035 (8-729-050-13) and Q8038 (8-729-038-10) has been shorting these are on the D-Board.
Sony KP61V25 RA1 Dead KP61V25 serial 9001930 Dead Unit has no high voltage. "E" board is wet from glycol coolant leak from the Red and Blue CRT's that are leaking Red an Blue tube
Sony KP61XBR48 RA1 Dead KP61XBR48 Unit is dead. Q601 & Q602 are shorted along with R607 open. Preliminary checks of the secondary loads on this supply indicate no shorts circuits. Replacement of these devices again resulted in the instant failure of these transistors again. Forcing the power supply on with artificial loads on the + & - 135 vdc power supply allowed the supply to run correctly. High voltage was disabled by removing G4 connector. This disables the B+ to the High voltage output transistor Q801.  It should be known this television has a High voltage output transistor and a Horizontal output transistor Q508. With the HV disabled we could check out the H. output stage with reduced B+ and current by placing a 40 watt light bulb in series with the -135 source. Al power up with the shutdown defeated, the bulb lit up brilliantly. This indicated too much current. A process of elimination indicated C514 was breaking down under operating voltages. The value was a .0068 @ 1.2KV. I physically measured .001 mfd. Replaced with a 1-136-613-11.
Sony KPR53EXR15 AP Dead KPR53EXR15. Unit had no power Unit has Q603 and Q614 are shorted. When all are replaced only Q614 shorts. Tech needs to apply power to this unit easily, with the use of a variac. While watching current go up gradually. Suggest that the "D" board be disconnected and see if it will turn on with no more than 1 amp of current. It did not. An Amp of current was reached at 38 vac.. Further checking found a leaky D605.
Sony KP51WS500 RA6 Dead Unit is dead. Will not turn on. Visual checking on G board found that C5054 was broken off the board.
Sony KP57HW40 RA6 Dead Unit will not turn non. Stand by supply is operational. But it will not turn on. The "B" board was rempoved and the television turned on but had not raster. The "B" board was substituted and the set operated. Problem was the B board.
Sony KP46S15 RA1 Dead KP46S15 Unit will not turn on. At no time can a "Click" be heard from the "G" board when the power is applied or when the power is turned on. I had the tech measure the Standby B+ at the input of IC652(1) The voltage should be 24 vdc. We only had 9 volts. Checking with an oscilloscope we found 22 volts peak to peak on the input of the regulator. Unit had defective C667 a 470mfd@ 35 vdc. Replacing the capacitor corrected the symptom.
Sony KP53V25 RA1 Dead KP53V25 Unit will not turn on. Shorting the Emitter and base of highvoltage output allows the h. drive to appear at the collector of the h. driver transistor. Update: unit had bad flyback. Anode lead will not come out of flyback. Must replace lead link fro Anode 1-900-211-34 short link for anode lead
Sony KP53V75 RA2 Dead KV53V75 Unit will not turn on. I had tech check continuity on the AC line cord which would measure the resistance of the Stand by transformer. Continuity was 570 ohms which is good. Next the tech needs to measure the input of IC641 it must be 20 volts. IT Was. The output of IC641 was "0" This IC is a 3 legged linear regulator with a generic # of 7812. It should have had a 12 volts output. 
Sony KP53XBR45 RA1 Dead Sony KP53XBR45 unit is not turning on. F601 & f602 are open. Factory upgrade. Replace C815, C897, 858, & 889 from a 1000mfd @ 35 vdc to a 470 md @ 35 vdc.
Sony KP57HW40 RA6 EEPROM Where is the EEPROM located that stores the alignment data for the convergence? The EEPROM Location for the AD-Board is I.C.1607
Sony KP53XBR35 AP ghosting KP53XBR35 After unit has been playing a while the picture will duplicate it self on the left side of screen. Customer was able to take a photograph of the symptom, The duplicated picture is in the proper chroma phase, sync, brightness, and contrast.  but is slightly elevated in height about 3 or 4 horizontal lines. The symptom may stay on the screen for a few minutes or several hours. The second phantom picture is delayed by, what calculates in the photograph, 31 microseconds which is about 1/2 H. Forwarding this case to Sony. This symptom is intermittent. Recommend the Digital comb filter for this unit to be replaced. Since the jungle IC was replaced to try and correct this symptom with.  The digital combfilter is the only thing that could cause the storage of several lines of video and insert it in the wrong spot if the digital counters in the combfilter malfunction.  Swapping the combfilter cured the symptom.
Sony KP53HS30 RA4 Green flashing The main picture will turn green intermittently. The A & B board contain all the circuitry for PIP & Main picture. Found the B Board causing the problem. Replaced the board and symptom disappeared. Part # A1136-218-A
Sony KP46S25 RA1 Green Missing Sony KP46S25. Unit turns purple (looses green) There has been a case history problem with the sample and hold capacitors C313, C314, C315 in the jungle IC circuit. These devices become leaky and cause a loss of 1 specific color.
Sony KP53S55 AP HIGH VOLTAGE Unit has no high voltage, Tech replaced the High voltage block and the set still has no High voltage. Measuring the B+ 's at the "A" board connector A2(1 &9) we find -90 & +115 respectively. The -90 is wrong. It should be -135 vdc. Measuring the collectors of the Drivers for the HV output Q806, we find the voltage at 122. This would indicate the Horizontal drive may be missing. Tech needs to look at the H driver circuit for a no drive condition. 
Sony KP61S70 RA3 HIGH VOLTAGE KP61S70 serial 9005015. Unit is not developing high voltage but has Sound. No secondary voltages from Main power supply Recommend that the tech order the "G" board. Unable to provide part number.
Sony KP61HS10 RA4 High voltage missing Unit has sound but no raster. LED blinking 5 times indicating a IK blanking problem. This was because there was no beam current. No beam current, no IK feedback. When checking the horizontal output waveform at the high side of the deflection yoke we found a normal horizontal pulse. When checking the vrertical output at CN5008(1) we had a normal vertical pulse. The abnormal condition was noticed on the HV output transistor Q8007 was 135 vdc on all three elements. It was discovered that the HV regulator transistor (Q8008) had a Gate to Source short.
Sony KP53S55 AP High voltage missing KP53S55 Serial 9003661. Unit has no high voltage, Tech replaced the High voltage block and the set still has no High voltage. Measuring the B+ 's at the "A" board connector A2(1 &9) we fins -90 & +115 respectively. The -90 is a wrong. It should be -135 vdc. Measuring the collectors of the Drivers for the HV output Q806 we find the voltage at 122. This would indicate the Horizontal drive may be missing. Tech needs to look at the H driver circuit for a no drive condition. 
Sony KP53V75 RA2 High voltage missing KP53V75 serial 9008493. Unit is not turning on. The power supply turns on but it will not develop high voltage. I asked the tech to remove CN501 from the "G" board and try starting the set up again. The set turned on and developed high voltage. Tech did not follow instructions in the bulletin #396. This area was covered in detail in the class. Unit has a shorted Red CRT and burned video driver IC on the CR board. Tech will need the CRT, and the RED CRT driver board
Sony KP46S25 RA1 HORIZONTAL KP46S25  This set has horizontal overscan. Tech was trying to find a failure in the circuit that houses Q811. The tech was in wrong area of the chassis. The area he should be in is the Horizontal output not the High voltage output. The set uses Q510 as H. Output, and Q509 as pin output. Tech needs to verify the presence of Vertical parabolic drive signal at R501 on the "A" board.
Sony KP53XBR35 AP horizontal Unit has a intermittent symptom of a horizontally doubled picture.  In other words, if a 1 inch wide re vertical bar were to be displayed at the center of the screen another I inch wide red vertical bar would be seen about 4 inches from the left side of the picture. Recommend the Digital comb filter for this unit to be replaced. Since the jungle IC was replaced to try and correct this symptom.  The digital combfilter is the only thing that could cause the storage of several lines of video and insert it in the wrong spot if the digital counters in the combfilter malfunction.
Sony KP53XBR45 RA1 HORIZONTAL KV53XBR45 unit has horizontal overscan Tech needs to look at the vertical pin correction signal on the "A" board CN304(5). This signal must be about 1 volts peak to peak of a vertical parabolic waveform riding on a 2.7 volts DC level. If the voltage is significantly over three volts the Pincushion ciircuit will saturate and damage will occur. If the voltage is too high, too low, or missing the Parabolic wave the Jungle IC should be suspect.
Sony KP53XBR45 RA1 KEYBOARD Sony KP53XBR45 When the Power is turned off at the set the TV will turn back on again Install a de-bouncing capacitor 2.2 mfd@ 16vdc) between the Low and High side of the Power on/off switch. The front screen will have to be removed to accomplish this.
Sony KF60XBR800 LCD LED Flashing TV will attempt to turn on but  the  timer LED will continually blink 5 times slow then 5 times fast and  5 time pause  5 time pause . The Lampdriver unit deffective  Part# 1-468-510-11
Sony KP53XBR200 RA4 Line in video This unit has heavy digital type of noise that looks like Unit has a defective BR board. The BR board contains the electronics that convert the NTSC signals to progressive scan format.
Sony KP41EXR96 AP line paring Sony AP chassis. Unit has line paring at the vertical rate. Appears like the scanning lines are spreading apart in the middle of the screen. These disappear after the fuses are removed from the "D" board. This is a very good test to insure the trouble is in the convergence correction. Unit had defective Convergence output IC's
Sony KP53XBR45 RA1 LINE PARING Sony KP53XBR45 RA1 Chassis. Unit has line paring. ?This condition is when the vertical scan rated changes an possibly reverse directions quickly then return to normal again I had tech freeze the jungle chip which stopped the symptom. Heating the chip aggravated the symptom. This is caused by the Jungle chip
Sony KP57WV600 RA6 Line,  60 HZ hum bar The problem but tech noticed is a 60hz a "hum bar" (single light colored horizontal bar floating through pix top to bottom. Also appears when there was NO video input on the auxillery NTSC video inputs.  Just black with this hum bar floating through.  When inputing a signal, the bar dissappears.  The tech probed around and when I contacting the "B" board, the pix would shift a little vertically. That was the only noticeable effect. Tech removed the "B" board, soldered all of the contacts on (CN3203 and CN3204) and put the board back in the set.  The hum bar dissappeared. All video inputs work OK and the pix does not "shift" position when touching the "B" board.  One of the grounds when the tech was soldering "pulled away" indicating the probable source of the ground loop.  Thanks to Jim Macsuga, Wa
Sony KP41T35 RA2 Lines KP41T35 with lines in the pix, resembling arcing. Tech saw this symptom several times in direct views and the solution has been the flyback. Tech replaced the Flyback and the divider block but still had the same symptom.  It is the pattern covers the entire screen. The pattern consists of approx. 16th in lines that are interlacing, kind of a basket weave look.
The name for this symptom is called "line Paring" It is most likely caused by the Jungle IC. Suggest the tech try the set in the video input mode and see if the symptom shows in  that mode before any more parts are replaced. After a short test it was determined the problem is not caused by the Jungle IC because the set ran flawlessly in the video input mode. This really can only have 1 cause which will be the tuner. It was not mentioned in the first assessment of the symptom that it also had a roaring in the audio at the time of the line paring  of basket weave interference across the screen. Unit had bad tuner
Sony KP41T35 RA2 Lines KP41T35 Unit has a symptom of an uneven pattern covers the entire screen. It consists of approx. 1/16th of an inch lines that are interlacing, kind of a basket weave look like.  Tech replace the Flyback with no effect in the symptom. This symptom is known as line paring. I sent tech information on the symptom that may lead him to the conclusion that the Jungle IC is at fault
Sony KP53S25 RA1 Lines KP53S25.. Horizontal lines in pix in the tuner video and OSD. Actually the lines appear as gaps between the normal scan lines. Problem appears to be related to the jungle chip. The vertical drive signal is supposed to be a clean saw tooth wave form but when the problem showed up on the screen the saw tooth develops sharp and rapid deviation in the the angular movement of the wave. Replacement of the jungle IC corrected the fault
Sony KP53V75 RA2 Lines KP53V75 serial 9021573 Unit has a vertical line in the middle of picture from top center left to lower center right side. Removing the screen finds the main reflector mirror is fractured down the center of the glass.
Sony KP53XBR200 RA4 Lines KP53XBR200 serial 9008681.  Unit has a faint vertical line in the picture lines in the picture. Only shows up on tuner video. Unit needs KIT T-9986-0653 per bulletin # CSV-1 #402. Kit consists of  9 resistors, 4 capacitors, a 22 inch wire connector, a wire tie, and instructions.
Sony KP57HW40 RA6 Lines  in video Sever horizontal lines in videofrom Composite, tuner and S-video Input modes. Component video is finet Picture And Picture are notrmal. When using composite, Tuner or S-video. "B" board, The Digital Reality Controler (DRC)  Defective. This board converts the NTSC video to Progressive scan.  It is also responsible for the PIP and PNP operations. Replacing the "B" corrected the trouble.
Sony KP53S25 RA1 OSD KP53S25 Unit will  play then it will go to a slight green picture the  channel displays will come on automatically Checking the ID codes in the set wee found all id codes correct except for ID4 it was 64 instead of 80. Resetting the code to 80 caused the set to loose raster and enter the video input mode. We let it do that and initialized the EEPROM. Everything operated correctly after that point
Sony KP53V80 RA3 OSD KV53V80 After the set is turned on the raster will appear as a bright screen with video. The brightness is intense and lacks contrast. The OSD menu is also missing Monitor the cathodes of each CRT at the instant of turn on. All cathodes were close to 186 volts. But as soon as the raster appeared the voltage dropped to 89 volts. This indicates the CRT's are in saturation. During this test the 200 volt source was still is running nearly 200 vdc.The IK lines are causing this problem. Measuring the IK line at the "CG" board at CN731(1) we measured 5 volts DC as soon as we turned on the set. After the picture appeared the voltage did not change. (NOTE: on a working set this voltage should be near Zero volts as long as there is "0" beam current. Each cathode had a normal IK pulse of 38 volts. The IK Buffers on each board are very hard to get to so another plan was develped to check these devices. The following transistors are the IK buffers Q733{CG board} Q764{CB board} & Q706{CR board). They are hidden by a heat sink for the Video output transistor. Tech needs to order the spark gaps for each CRT module and replace the defective IK buffer.
Sony KP53XBR200 RA4 OSD KP53XBR200. Unit will not loose the on screen display data that shows the program material, length of time,  type or program, rating, … etc. This is the XDS (extended data services) information that is broadcast in the VBI.  It is selected of the customer has the XDS feature turned on. We could not turn this unit off. Suggest tech to enter the tech menu and initialize the EPROM by pressing "8" the "Enter". This corrected the symptom.
Sony KP46S55 AP PINCUSHION KP46S55 ser 9100302. Unit has a Q502 and Q508. Shorted. Pervious Tech was working on the flyback section. On the "A" board the area around C510 has hole burned through the  board. This makes the board unrepairable. Unit will need the A board
Sony KP53V15 AP Pincushion KP53V15 Unit has Q509 getting very hot after 15 to 20 minutes Previous tech did not put ant heatsink compound on the Device. Putting Heatsink compound on Q508 allowed the device to run 20 minutes but still gets slightly warmer than it should. R518 a 18K resistor has increased in value.
Sony KP53S65 RA2 PIP KP53S65 serial 9141528. Unit has a normal picture but it does not have luminance in the PIP area. The PIP and comb filter assembly are in the  "PT" module. CN5001(5) is the sub video input for the PIP signal. However the CN5051(14) is the Luminance output is missing. The U & V signalsCN5051( 16 & 15) are present. (They are the Red and blue portions of the PIP signal) Tech needs to replace the "PT" module part # 1-665-394-12
Sony KP53V80 RA3 pixelate KP53V80 Unit will run fine for hours but color hues will changes and at times and the color will pixelate. Problem does not show up if the color is turned all the way down.  The PIP is not effected the PIP color is normal.. Since the trouble does not affect the B&W portion of the picture it was ruled out any failure with the IK circuitry. Also the PIP was unaffected so we ruled out the PIP module or the Jungle IC. The only logical answer was the 3D comb filter since the video is digitized and the resulted Chroma and Luminance converted back to analog again. This is about the only place where the chroma can become Pixilated. However the tech will probably need to change the "A" board. The set is less than 30 days old and the "A" board can be replaced under warranty. The set is covered under the SAYS program. Unit had a defective "A" board
Sony KP61XBR48 RA1 RAINBOW Sony KP61XBR48. Unit has rainbow colors in the lower right hand corner & when the power turned off using the power button on the television the set will not shut off. Rainbow caused by the speaker wire casting a shadow in the light path from the projected image. Tech needs to reroute wire. Next tech will need to install a 2.2 mfd capacitor across the power switch.
SONY KP53HS10 RA4 Raster Green When in the HD input mode Video 5 mode the set only displayed a green Picture In user setup ,mode the IN Put 5 was set to RGB instead of Y Pb & Pr mode. Changing to the second setting corrected the symptom.
Sony KP61HS30   serial # 9733134 RA6 Raster missing TV has normal sound and the front panel LED blinks the normal amount of times after the set is turned on, then stops blinking. Unit has no raster at all. When the G2 is increased a raster will appear indicating full horizontal and vertical sweep. Unit does not have OSD. When checking the ABL line at the neon lamp NE8001 we found the voltage to be a negative 1.2 volts. This line should be higher than this and the voltage should be around +3 volts. Checking the pull up circuit of the ABL line we found R8191 located just to the left of the convergence IC. We measured over 100 volts on one side of it and the -1.2 on the other. This resistor is a 2.2K@1/8 watt resistor.. Measuring the resistor we found it open. Replacing the device corrected the trouble.
Sony KP46C70 RA3 Raster, bright KP46C70 serial 9001847  Once the set is turned on the raster will appear as a bright screen with video but the brightness is intense. There are no retrace lines.  The set does not have any On screen display, sound OK. Q733 defective
Sony KP53V80 RA3 Raster, bright KP53V80 After the set is turned on the raster will appear as a bright screen with video. The brightness is intense and lacks contrast. The OSD menu is also missing. This phenomena is caused by one of the IK buffers on the CRT driver boards. The condition should be treated by replacing All IK buffers and replacing the Spark Gaps The following transistors are the IK buffers Q733{CG board} Q764{CB board} & Q706{CR board). They are hidden by a heat sink for the Video output transistor. Tech needs to order the spark gaps for each CRT module and replace the defective IK buffer. IK buffer number is 8-729-200-17 and the spark gap is 1-517-729-31 Locations for Spark gaps are SG702, SG732, SG762.
Sony KP53V80 RA3 raster, bright KP53V80 After the set is turned on the raster will appear as a bright screen with video. The brightness is intense and lacks contrast. The OSD menu is also missing. This phenomena is caused by one of the IK buffers on the CRT driver boards. The condition should be treated by replacing All IK buffers and replacing the Spark Gaps The following transistors are the IK buffers Q733{CG board} Q764{CB board} & Q706{CR board). They are hidden by a heat sink for the Video output transistor. Tech needs to order the spark gaps for each CRT module and replace the defective IK buffer. IK buffer number is 8-729-200-17 and the spark gap is 1-517-729-31 Locations for Spark gaps are SG702, SG732, SG762.
Sony KP53V75 RA2 Raster, Intermittent unit will run for days then it will go to no raster and no sound with Stereo Led flashing.  The stereo led flashing is not the typical LED is to indicate the system control is waiting for a acknowledgement from the Jungle IC. When this set goes into the failure mode it kills raster and sound but High voltage remains. Closer inspection also finds the set has high voltage with horizontal and vertical deflection. Tracing the SDA & CLK signals finds the CLK is running 3.5 volts pp and the SDA runs at 5.1 volts pp. While the tech was working on TV the picture came back on again and the CLK line climbed to 3.9 volts pp. It never climbed to 5.1 v pp like the SDA line. Tech isolated all the plug in boards to try to get the CLK to rise to 5.1. Only when the TU101 was disconnected the CLK Line went to 5.1 volts pp. 
Sony KP53XBR300 RA4 Raster, Intermittent Unit has Repeat IK failures. After all modifications are done, the set still seems to have repeat IK failure events recorded in the error menu. One the set is turned off then back on again the symptom will not show up again. Suggested the tech I find the green Ik pulse on the cathode of CRT. It  was 40vpp. Suggested that he check his setup procedure because he was trying to set the screen cut-off on a "signal-less" video input. Rather than setting the black pedestal to 175 volts using a scope. We found when it set  properly, we had a " very slight green raster" condition with no video to the  input. When we set the pedestal to 175 Volts, the cutoff and drive adjustments on the Blue CRT now seem to mirror the Red and Green adjustments (my blue was about 60 and red/green about 30 when bad, now all are 35).Now I don't want to say this PTV is fixed yet, it has been intermittant since last March, but I do know that the setup on these CRTs are right ontarget. The IK pulse on all 3 Crts are now 20Vpp.
Sony KP61XBR200 RA4 RASTER, Intermittent KP61XBR200. Unit has a symptom Unit has an intermittent symptom of loosing raster every hour or so. When the raster disappears the stand by LED in front blinks on and off. In about 15 minutes or so the set will replace CR CG CB, and A boards under the SAYES
Sony KP41T15 RA1 RASTER, None KP41T15 Unit is turning on. Timer light flashes at turn on and set will have sound, but no raster. Unit has no high voltage. "E" board is wet from glycol coolant leak from the Red and Blue CRT's that are leaking Red an Blue tube
Sony KP46XBR25 AP Raster, None TV has no raster for about 10 minutes then works OK! TV appears to be in scan loss condition. After checking with freeze mist on the "D" board we discovered a defective C1737.
Sony KP53EX35 AP Raster, None KPR53EX35 Unit has no raster but has sound and high voltage. Unit has no filament voltages. Tech  needs to measure the filament source at G4(3 & 4) This should be about Unit  has loose solder connection on At D624. Also the connections to the  Filament transformer were loose on the board. Several loose solder connections on T605 (4 & 6) were also in question. I suggested the tech resolder all dubious connections in the "G" board
Sony KP53S25 RA1 Raster, None KP53S25. Unit has no raster for 15 to 30 minutes. Unit has high voltage and the timer LED flashes for the normal 15 seconds then goes out. Unit has sound, but no OSD or PIP. It appears that the Jungle IC IC301 CXA1477AS may be causing this trouble. The we have Luminance up to IC301(1) and OSD at 19,20, &21
Sony KP53V75 RA2 Raster, None KP53V75.  9057801 Unit has no raster and cycling on and off every 2 seconds.. When turning up the G2 on any one of the CRT's the CRT will not have a complete raster but a glow that will be brighter on the top of the screen than the bottom. This symptom is generally indicative of a vertical failure. I had the tech measure the + & - 15 vdc from the main power supply at PS601 & PS602. PS601 was open causing the -15 volts to be missing. However two weeks later we were out again to replace both fuses. Customer claimed as before the set was working fine the day before and he turned it on in the morning and it failed to have raster. This indicated the fuses were opening at "TURN ON" rather than failing while watching the set. It was indicated by Sony there was going to be a  bulletin on this unit that reduced the size of the filter capacitors on the + & - 15 volt lines, All 4 electrolytics are reduced from 1000 mfd to 470 mfd @ 25vdc. These are C656, C657, C815, & C889. After replacement no more blowing fuses.
Sony KP53XBR45 RA1 Raster, None KP53XBR45 serial # 9017298 Unit has no raster. Led in front is flashing. Unit does have High voltage and sound.  There is an IK pulse on the cathode of each CRT but it is too high, over 90 volts PP. The G2 voltage is too low. Checking the G2 voltage at each CRT it was discovered it was only 82 volts on all tubes. The G2 wires to each tube were disconnected and measured the free end and it was still only 84 volts.  The output from the flyback T801( MV) {supply voltage for the Screen/Focus block was 12,000 volts}. This is normal. Disconnecting the (G2) wire that leads over to CN882(1) allows the picture to come on but the G2 supply only increases by a few volts. It has been determined by these tests that the Focus/Screen High Voltage resistors assembly. 1-223-925-11
Sony KP61V45 RA2 Raster, None KP61V45 serial 9000412 Unit has no raster. Unit appears to have high voltage but no filaments. tech needs to inspect the filament winding continuity at CN766(5 & 4) at the blue CRT socket with all CRT's disconnected This resistance should be around 1 ohms. In this case the unit was 53 ohms. I instructed the tech to check into filament winding and R569. Quick check of Q569 found it had increased in value to over 50 ohms. It is supposed to be 1 ohm.
Sony KP61XBR200 RA4 Raster, None KP61XBR200. No Raster but has sound. Unit will operate for several days then loose raster. During the episode the Timer Led will blink as it does during the warm up sequence The LED is blinking 5 times. This is an indication of a IK error.  Since it is so intermittent I suggested that he could replace the A, CB, CG, & CR boards. These are covered by the S.A.Y.S program. It is possible that a tube is causing this trouble but we cannot confirm it unless we see the symptom. The replacement of the boards is an attempt to eliminate 4 possibilities of the IK generating and sensing circuit.
Sony KP61XBR38 AP RASTER, None KP61XBR38. Unit has no raster but has PIP, Sound, and On Screen Display. This symptom shows up in the tuner and video input modes. When checking the monitor output from the rear of the set the video is fine. Next we needed to measure the video in to the P4 board. This is the digital combfilter.  Checking P4-32(6) we had good composite video. But there was no Luminance out at P4-32(3).  All B+'s were normal on the post regulators on the board. Placing a 4.7 mfd capacitor between these points, luminance was restored. This test proved the combfilter was defective and the rest of the set was OK. It appears that IC201 on board may be defective. Video can be traced to IC201(25). Clock & BGP are present at IC201(11 & 17).  Tech will need to replace the board if it is available.
Sony KPR46EX25 AP Raster, None Sony KPR46EX25 Unit has no raster. Filaments do not warm up. No pulses to the filament pulses to CRT but filaments are 200 volts above ground. Unit had open resistor R697 a 1.2 ohm resistor for the filaments
Sony KPR53EX35 AP Raster, None KPR53EX35 Unit has no raster but has audio and high voltage Unit has no filaments to any of the three CRT's Tech needs to look at the output of T607. This is the filament supply transformer. Note: the filament voltage rides 240 volt above cold ground.. Filament voltage can be read between connector G4(3,4). Product had loose solder connections around this transformer and R613.
Sony KP51HW40 RA6 Red Missing Intermittent loss of light output from the red CRT. Troubleshooting:  Adjusted red G2 voltage and could not get red retrace.  Checked voltage on R7101 as G2 was adjusted and read 0v on one side.  Resistor was open. R7101 value:  560K ½ watt
Sony KP53V80 RA3 Remote Remote control does not work. Remote was fine.. Found a defective Remote control receiver, D1291 on the HC board. 
Sony KP53V80 RA3 Remote Remote control does not work. Unit worked intermittently a few weeks before it went into total failure. Works the same with a universal remote. Found a defective 5 volt Zener diode D1292 on the HC board. This is a clamp diode for the SIRCS input to the processor, Replacing the Zener corrected the symptom.
Sony K53V80 RA3 RETRACE LINES KV53V80 serial 9001186.  After the set is turned on the raster will appear as a bright red screen with video. Pulling the red CRT socket and turning on the set we measured the Collector of Q706 The red IK buffer. It should have been "0" but it was 9 volts. Replaced Q7056 and did the factory upgrade on the all the CRT modules corrected the problem.Tech replaced the spark gaps for each CRT module and replaced the defective IK buffer. IK buffer number is 8-729-200-17. The spark gap Pn# 1-517-729-31 with locations of SG702, SG732, SG762.
Sony KP41T65 RA2 Retrace lines Unit has a bright screen with retrace lines. When measuring the cathode driver pin on the CG socket with it connected to the tube we found 36 volts. When disconnecting the socket the voltage rises to 177 vdc. Unit has defective CRT A-1501-372-A
Sony KP41T65 RA2 RETRACE LINES KP41T65 serial 9531495. Unit has a brought screen with retrace lines. When measuring the cathode driver pin on the CG socket with it connected to the tube we found 36 volts. When disconnecting the socket the voltage rises to 177 vdc. Unit has defective CRT A-1501-372-A
Sony KP53V85 RA2 Retrace lines Unit has bright screen with retrace lines. CRT socket "CR" board has a hole burned through it. Previous tech out simply ordered All three CRT driver boards and the 3 CRT's because of a burn in the center of the tube. Tech has no 200 vdc source from the G board.  The 1 ohm resistor is open from the D520 200 vdc rectifier to the CR board.
Sony KP53XBR45 RA1 SCREEN Sony KP53XBR45 Unit has a streak across the top of the screen Appears like the unit has a defective screen, or a scratch between the Lenticular and fresnel lens. Tech calling in for an authorization for screen replacement. The defect as the tech explains showed up as a straight horizontal line at the top of the screen. It was a discoloration toward the color yellow when White is displayed. Also on the lower corner was a dark circular pattern that did not match the curvature of the Fresnel lens. I instructed the tech to inspect the entire optical light path for any defects. Tech reported back to me the mirror had a smear completely across the surface area. Possibly caused by a previous cleaning with a cleaning rag that has some oil based contaminate. Gently cleaning the mirror corrected the fault.
Sony KP46C65 RA2 screen  KP46C65  This screen has been replaced 3 times. Customer claims screen has a crack in the screen. This crack is in the same place as the last two times in the same set. There is no crack, but evidence that a liquid was smeared down the front lenticular screen which left 5 vertical bands of varying widths from 3 mm  to 7 mm. The liquid pooled at the bottom of the screen and it migrated, by capillary action, behind the front screen to the rear screen (Fresnel). The fluid followed the contour of the circular cut screen. This is the reason for the dark lines that appear in a "U" shape at the bottom of screen. This is clearly fluid damage and not covered by any warranty. Customer does admit to using a "Diskwasher" rear projection screen cleaner in a red spray bottle. According to the customer the original screen had the exact same type of damage, and so did the first replacement, where it was replaced after a few weeks where it was changed again. This second tech warned the customer not to use any liquid cleaner on the screen. Now this screen has obvious liquid damage. This is customer responsibility.
Sony KP46S25 RA2 SHUT DOWN KP46S25 serial  9000075 unit is shutting down The stand by voltage is stable during the stand by mode. Before working on the television, it would cycle on and off. It had a bright glow at the top of the screen. Now after the second tech worked on the unit the set shuts down immediately after turn on. Tech forgot about a unusual symptom that if the set looses vertical sweep the television will cycle on and off as long as the antenna is connected. But if the antenna is disconnected the set will shut down immediately. This was the case for this unit IC1501 was shorted. Also PS602 was open
Sony KP46V15 AP SHUT DOWN KP46V15 Unit has a shutdown symptom. Several technicians were out and the last technician installs the D board regulators. IC904 is a 3 legged regulator used  for the - 15 volts supply. The original was a plastic one. Tech did not realize the regulator was shorting the -15 volt to ground because the new device has a metal back where the original was all plastic. The cure was to cut the trace on the CBA that connected IC904 heatsink to cold ground. The enabled the set to operate with this new regulator.
Sony KP53HS10 RA4 Shut Down As soon as the TV is turned on the set will shut down.  When unplugging connector CN8003 the set will turn on and run with horizontal & vertical sweep and sound. But with this connector the high voltage is disabled. When checking the collector of the HV converter Q8007(c ) the wave form is  badly distorted as soon as the connector CN8003 is reconnected. Unit has defective flyback transformer                               T8003. pn 1-453-285-11.
Sony KP53XBR45 RA1 shut down Unit had two CRT's Red and Blue leaked on the original "E" board prompting their replacement. After changing the CRT's and the "E" board it was discovered the set had a symptom of immediate shut down. When checking IC901(1&13) and IC903(13) we had no positive voltages that would cause a high voltage protect shut down. At no time did we ever get high voltage or Horizontal drive, for the High voltage output, Q801. However Q505, the horizontal driver for the horizontal output always had drive to it.  When the first technician replaced the original circuit board it was discovered that he did not transfer the jumpers on  CN804. There must be three jumpers on this connector otherwise the set will never get high voltage. CN804(1&2), CN804(3&4), CN804(5&6). Unit needs these three jumpers to route the 2 ABL circuits, .Horizontal drive pulse. Replacing these jumpers restored normal operation.
Sony KP57HW40 RA6 shut down Unit goes into shut down at the moment of turn on. Disconnecting CN8022 off of the "D"  board and the TV will turn on. On IC7101, IC7201, & IC7301 on the CRT boards have been
Sony KP61XBR45 RA1 shut down Unit turns on but goes into shut down after raster comes on and the set has a bright screen with retrace lines. Unit now has all three CRT burned  Measuring the 200 VDC source the finds no voltage, Unit has open R859.  Unit will need modification listed in bulletin 291R1 and 281R1 Tech will need to correct the main problem then after corrected the CRT will have to be replaced.
Sony KP41T35 RA2 SHUTDOWN KP41T35 Unit has blown PS601 and PS602 fuses. The Tech replaced the convergence IC's and the fuses and powered up the unit again. It blew the fuses again. Tech needs to check into the possibility that the convergence output are being rail to either side. of the power supply. The process of disconnecting the sub deflection yokes from the "G" board then power up the set will eliminate the possibility of a fuse blowing in the event that a convergence output IC is being railed to either power supply. Tech also needs to check the bulletin # 344 related to reducing  the value of 4 electrolytic in the convergence circuit, C858, C859, C815, C897. These must be reduced from 1000 mfd@ 25 vdc to 470 mfd@25 vdc.
Sony KP53HS30 RA6 Shutdown The complaint was intermittent shutdown with the LED flashing 6 times then pause then 6 more times.  Most of the time the set will run fine but randomly it will loose Raster and sound.


Originally it was thought the trouble was in the "A" board or the "D" boards. Both were replaced but the trouble still persisted.  Inspection of the "G" board discovered a diode D5015(K) had excessively long leads. Long enough, when bent, to touch the ground plane shield. There was no clearance between the cathode lead and the shield. The cathode lead was trimmed back and all seems to be well now.
Sony KP53V35 RA1 SHUTDOWN Sony KP53V35. Unit goes into an immediate shut down. Unit will not turn on at all. Unit will try to turn on but shuts off. I had tech measure the B+ at the +135 and the -135 VDC sources. The -135 was not indicating any voltage. There is a 18 ohm short to ground on the emitter of the horizontal output transistor. I'm having tech check into the Horizontal pin amp and horizontal output transistor. If a short in this circuit occur when the set ha a picture it is very likely that CRT damage has occurred. It is recommended the screen be removed or use what ever method available to check the CRT faceplates for phosphor burns. If burned the CRT will also need replacement. Q510 and Q509 shorted
Sony KP53V80 RA3 shutdown KP53V80 serial 9001172 Unit will turn on and a picture will appear but it will periodically arc and shut down. Blue CRT defective. Arcing in neck. Visual arcing.
Sony KP61V35 RA1 shutdown KP61V35. Unit will turn on then go into immediate shut down Tech has tried all the normal methods of isolating CRT,  HV block, Loss of horizontal or vertical sweep disconnecting the  200 vdc source voltage from the red CRT. All these circuits being disconnected still did not prevent shut down.. However the unit will still shut off right after high voltage comes up. I needed tech to check the more of the not so common shut down sensors.  These were D board protect line CN1757(7) , "E" board Protect line CN851(5), and the "A: board protect line CN222(4)  I first had tech remove the CRT sockets from each CRT to prevent phosphor burns on the tubes. Next remove the fuses on the "D" board and remove connector CN1757.  Then turn on the television. It turned on with high voltage and stayed on. This indicated the trouble was din the "D" board. A quick static test of all the post regulators IC1804(1), IC1803(1), IC1808(1), & IC1807(1) found that a short circuit to ground was indicating on the output of IC1804(1) this is the +5 volt regulator. checking through the board and lifting the bypass electrolytic capacitors on this line discovered a shorted C1832 a 330 mfd @ 16vdc
Sony KP61XBR48 RA1 shutdown KP61XBR45 9034307 Unit turns on but goes into shut down after raster comes on and the set has a bright screen with retrace lines. Unit now has all three CRT burned  Measuring the 200 VDC source the finds no voltage, Unit has open R859.  Unit will need modification listed in bulletin 291R1 and 281R1 Tech will need to correct the main problem then after corrected the CRT will have to be replaced.
Sony KP53S55 AP shuts down KP53S55 serial # 9101980. Unit shut down immediately after the set is turned on. Set does get high voltage. Tech replaced the flyback transformer which did not correct the symptom. I asked the tech to check the B+ at the "G" board connector G2(9 & 1) Pin 9 should be 115 vdc and 1 should be -135. They were. Next connect and oscilloscope to the collector of Q811 (high voltage output) and turn on the set. There should be a pulse of 1000 volts peak to peak spaced at 63 microseconds apart. This signal was perfect then the set shut down. Next I had the tech check the Collector of Q502 (Horizontal output). There was no Horizontal signal, it should look exactly like the Horizontal output. Since Q502 runs on a negative source voltage the DC supply goes to Q502(E) it should be -109 vdc. It was "0" volts. Further checking it was discovered that Q508 was completely turned off. Checking the components in the Horizontal output circuit found an open R515 an 18K resistor. Replacing resistor restored normal operation.
Sony KP53EXR95 AP SHUTSDOWN Sony KPREXR95 Unit will click on but not say on. Unit going into deflection shut down. Unit has no horizontal sweep. Bad solder connection under Horizontal output transistor on "N" board
Sony KP53V35 RA1 SHUTSDOWN Sony KP53V35 RA-1. Unit shut down as soon as set is turned on. Tech ordered R865 and D814 because they were shorted After parts were installed a new symptom was evident. "Unit turns on but enters shutdown after the tube warm up. CRT's get bright with ret Unit had torn trace on E board that connects the 200 vdc line to CN708(7) which connects to the CR board. Apparently the traces were accidentally torn in the process of moving the chassis around. Repairing the traces corrected the symptom.
Sony KP53S15 RA1 smear KP53S15 Unit has a green smear When tapping on green CRT the picture the picture will smear. Tapping
Sony KP46S55 AP squeal KP46S55. Unit making a mechanical squeal either in the power supply or deflection circuit. The symptom occurs when the unit is first turned on. Suggest tech listen to where the noise is coming from. It was determined that L501 was the source of the trouble. Rather than ordering the coil, I suggested the coil be saturated in a cyanoacryltic compound (super glue) to quite the loose coil laminations
Sony KP46V15 AP Squeal KP46V15 serial 9009331 Unit has a high pitch squeal from the high voltage power supply Tech tried to glue the transformer with speaker cement now the set does not run anymore. It is unknown what compound is in the glues used to quiet down the transformer but I would not use it any more. Super glue or cyanoacyralate is probably the best compound to stop acoustical lamination vibration. The tech will need to replace the flyback transformer.
Sony KP53XBR15 AP system control When the set is in the external video input mode and put back into the antenna mode the set will be on channel 167 with white noise on the screen. This is an illegal channel entry and is not a function of CATV our the UHF channel number. Everything else works normally with the exception of this glitch. My suggestion is to try to initialize the EPROM and see if the symptom clears up. This action did not correct the symptom. EEPROM replacement solved the problem.
Sony KPR46EX35 AP SYSTEM CONTROL KPR46EX35. Unit turns itself on or off at its own will. Customer explains that the TV will turn it self on in the middle of the night or it will turn itself off while watching the set. The power switch, IC001 in "A" board. When measuring the  Power Key input to the main Microprocessor, IC001(11) it was only 3.7 volts with no keys pressed. Even when connector A-8 was disconnected IC001(11) stayed at 3.7 volts. Also this voltage fluctuated in level from 3.5 to 3.7. When C038 was removed the voltage increased to 5.1 volts. Suggest the tech replace C038 a 0.01 mfd capacitor. With the new capacitor the voltage retained the 5.1 volts. C038 was leaky.
Sony KP46S25 RA1 vertical  Pix flashes upside down then back to normal. This take defective Jungle ic301….
Sony KP61V75 RA2 VIDEO KP61V75 se 9009906.  The symptom on this screen is a strange artifact in the video next to fine detail objects. The artifact can be seen at times if a persons face is displayed and zoomed out to a distant image. The lips will can still be seen but to the upper left of the lips there is a bright white artifact in the shape of the lips. This can be seen on other images but this is the tech explanation of the symptom I asked the tech to reproduce a stair step waveform on the screen. The stair step was to be interrogated very closely for any anomalies on the steps, or in the Sync area of the signal. Video looks great at the input of  the PD board CN3401(6).  But there are fine overshoots on each assendig steps of Luminance on all steps measured at the "Y" output CN3401(2). An overshoot on the 7.5 IRE step is in excess of .4 volts. Each after the first step has an over shoot on it the exceeds the previous step. This problem is being caused by the 3D Combfilter or the PD board. Tech needs to order the PD board.
Sony KP57HW40 RA6 Video missing   IC309 (8-752-100-25) Jungle I.C. they have been having problems with this
IC.