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TROUBLESHOOTING SONY TV PICTURE AND SOUND PROBLEMS


Sony televison audio and video problems and solutions


SONY TV REPAIR TIPS

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  • KV2029 DEAD. R621/2 Q602 2SD1497-02
  • KV2032 KEEPS CHANGING CHANNEL, D12
  • KV2032 WON'T START, DEAD. CHECK/REPLACE R627 2,2M RESISTOR IN THE POWER SUPPLY.
  • KV2032 WON'T START,DEAD. /REPLACE R627 2,2M RESISTOR IN THE POWER SUPPLY.
  • KV2032ME NO HORIZONTAL SYNCHRONISATION WHEN COLD. REPLACE CAPACITOR C509 10UF NEAR HORIZONTAL DRIVER TRANSFORMER.
  • KV2032ME NO LINE SYNC WHEN COLD. C509 10UF NEAR HORIZONTAL DRIVER TRANSFORMER.
  • KV2032ME PIC ONLY 3 WIDE ON LH SCREEN- INCREASES AS IT WARMS UP C514 = 33UF / 160V ; C801 = 22UF / 250V ; C557 = 2,2UF / 160V .
  • KV2032ME PIC ONLY 3" WIDE ON LH SCREEN-C514 33UF160V ;C801 22UF250V ;C557 2,2UF160V.
  • KV2060 ROLLING PIC, FIELD HOLD CONTROL R524 80K
  • KV2060/62 MK1 BLANK RASTER AND NO SND D102 IN THE MUTE CCT(MK1 VERSIONS ONLY)
  • KV2060/62 MK1&2 BLANK RASTER AND NO SOUND ALTHOUGH IT APPEARED TO LOCK SYNC BLANK STABLE PIC)1/ D 102 IN THE MUTE CCT(MK1 VERSIONS ONLY)
  • KV2060/62 MK2 BLANK RASTER AND NO SND D306 IN PULSE SHAPING CCT(BOTH VERSIONS)
  • KV2060UB XE3 DEAD R632 2M2 FROM PIN 4 OF IC601
  • KV2060UB XE3; DEAD R632(2M2).
  • KV2075 CONVERGENCE L551, A 27MH COIL
  • KV2075 POOR CONVERGENCE L551
  • KV2090 DEAD, R621/622 2SD1497/BU508A CHOPTR D605 AND D614 COIL L801.
  • KV2090 XE4 CHOPTR/LOPTR D605 AND D614 BOTH RGP15J, C513 2.700PF
  • KV2090 XE4 DEAD 1.25A FUSE F602 2SD1398 LOPTR C513 2,700PF COIL L801
  • KV2090 XE4 INT DEAD C513(0.0027UF) LINE OSC.
  • KV2090 XE4 INT DEAD, C513 0.0027UF FROM PIN 15 (LINE OSCILLATOR) OF THE TDA2579
  • KV2090UB WARM SHUT OFF 2SD1398 LOPTR/BU508D.
  • KV2092 INT SND VOLUME, D016
  • KV2092 VOLUME STICKS, Q015, Q019, Q021 AND Q017, BC546
  • KV2092 XE4 DEAD 1.25A FUSE F602 2SD1398 LOPTR C513 2,700PF COIL L801
  • KV2092 XE4 FINE RAGGED EDGES, FIELD OP HSINK PINS.
  • KV2092 XE4 RAGGED EDGES FIELD IC H/SINK PINS.
  • KV2096 BOTTOM FIELD FOLDOVER 470UF, 25V C527.
  • KV2096 XE4 DEAD 1.25A FUSE F602 2SD1398 LOPTR C513 2,700PF COIL L801
  • KV2096 XE4 DEAD LOPTR,LOPTX
  • KV2096 XE4 INT BLANK RASTER OSD ON IC003 SAA5240A
  • KV2096 XE4 INT PIC, SAA5050 TEXT CHIP
  • KV2096 XE4 INT RED GREEN TEXT CHIP.
  • KV2096 XE4 INT RED/GREEN CRT.
  • KV2096 XE4 RAGGED VERTICALS,FIELD OUTPUT HEATSINK USE WIRE LINK.
  • KV2096/92 INT SWAPS BETWEEN TUNER/AV EARTHS ON SIGS BOARD BY SCREEN CAN CLIPS
  • KV20SW1U NARROW WIDTH,NO E/W CONTROL,R841(4R7)
  • KV20TR22 INT SNOW, RESOLDER TUNER
  • KV20TS20 SNOWY INT PIC RESOLDER ALL COILS IN STAND UP BOARD AND TUNER
  • KV20TS27 COLD SNOWY PIC,TUNER UNIT
  • KV20TS27 PIC BALLOONING WITH BRILL,CRT FAULTY
  • KV20WS1B BE5 COLD STBY START C623(100UF).
  • KV20WS1U BE5 ALL MODES CEPT 4:3, BOTTOM BLANKED R008SM.
  • KV20WS1U BE5 BOTTOM BLANK, R008
  • KV211XMTU AE1
  • KV211XMTU INT GOES BRIGHT GREEN Q311 ON VIDEO PANEL -2SC2785
  • KV211XMTV EXCESS BRILL/FLYBACK LINES, HI A1'S R722 680K
  • KV211XMU AE1 HOT TUNER DRIFT, LO 30V L807.
  • KV2121U AE1 NO SYNC ,COIL T101. IT'S ON THE RIGHT-HAND SIDE OF SIGNALS PANEL A
  • KV2121U BE1 COLD NO SYNC SAA5231V6 .
  • KV2153AS GP1A NO SND,MUTE CIRCUIT TX NO 1506
  • KV2153MT FAINT SNOW ONLY ICP PS652 O/C.
  • KV2153MT FAINT SNOW, IC001, A 5-PIN REGULATOR ,ICP PS652,
  • KV2165MT DEAD STR50115
  • KV2184-34 WON'T START, PIN 41(STBY)OF MICROCONTROLLER IS HIGH. REPLACE Q003. NO LEAK OR ANY OTHER DEFECT WAS DETECTED WITH A VOM.
  • KV2184-34 WON'T START,PIN 41(STBY)OF MICROCONTROLLER HIGH. Q003.
  • KV2184-34 WON'T START. DIODE D604 SHORT CIRCUITED
  • KV2184-34 WON'T START. NOTHING HEARD UPON SWITCH-ON. DIODE D604
  • KV2184-34 WON'T START/ LOUD AUDIBLE BUZZ.SOMETIMES STARTS AND SWITCHES OFF AFTER A WHILE.IF STBY PIN(41)OF MP DESOLDERED,ALL OK REPLACE STR50115.
  • KV2184-34 WON'T START/ LOUD AUDIBLE BUZZ.SOMETIMES STARTS/STOPS STR50115.
  • KV2184 CHANS WON'T LOCK WHEN TUNING & GARBLED OSD LA78LR05 5 LEGGED 5V REG
  • KV2184 CHANS WON'T LOCK WHEN TUNING & GARBLED OSD LA78LR05 5 LEGGED 5V REG WITH µ RESET BUILT IN FAULTY
  • KV2184 DEAD - STR50115 OVERHEATING REPLACED CHIP( PINS 2 & 3)BUT STILL DEAD; D608 R2M DIODE & PS801 800MA CCT PROT
  • KV2184 DEAD STR50115
  • KV2184 DEAD STR50115; D608 R2M DIODE & PS801 800MA CCT PROT
  • KV2184 SWITCHES OFF ON BRIGHT SCENES R621 1R IN PSU SLIGHTLY HI(1R4)
  • KV21FS100 BA6 DEAD, R640 IC600
  • KV21FT1U FE2 GOTO FE2
  • KV21FV1U BC5 NO PI,IC301(CA2139S)
  • KV21FV1U COMBI DEAD PR512(2A)
  • KV21FV1U COMBI INT STOPS , TU OPTO PH452
  • KV21FV1U COMBI INT STOPS,TU OPTOCOUPLER PH452.
  • KV21GMR1 MK2 NO PIC, DAMPER DIODE ACROSS LOPTR
  • KV21LT1U FE2 DEAD 5 FLASHES,R618(270K)
  • KV21M1D NO PIC RASTER/OSD OK TDA9806
  • KV21T1U BE4A NARROW/UNFOCUS EEPROM 24C02.
  • KV21T1U BE4A SERVMODE OSD,5,VOL+ AND TV SHOWS TT PRESS MENU.
  • KV21T1U NO TXT, EXCESS WIDTH/HEIGHT, POOR CONTRAST RESET EEPROM -
  • KV21T1U NO TXT,EXCESS WIDTH/HEIGHT,POOR CONTRAST RESET EEPROM -
  • KV21T1U RESET EEPROM PRESS ON THE REMOTE ON SCREEN DISPLAY KEY NO 5 VOL UP KEY TV SET WILL COME ON WITH TT ON SCREEN PRESS MENU
  • KV21T1U RESET EEPROM1 PRESS ON THE REMOTE ON SCREEN DISPLAY KEY NO 5 VOL UP KEY
  • KV21T1U RESET EEPROM2 TV SET WILL COME ON WITH TT ON SCREEN PRESS MENU
  • KV21T3 VOLUME GOES TO MAX, NO REMOTE OR FRONT CONTROL REPLACE MICRO
  • KV21T3 VOLUME GOES TO MAX,NO REMOTE OR FRONT CONTROL REPLACE MICRO
  • KV21V6U ERROR MESSAGE - ASKING TO BE RESET ALL THE TIME EEPROM CHIP ST24C16FM6TR IC002
  • KV21V6U NO PIC- SCREEN BLANK - OSD OK IC401 CXA1855Q VI SWITCHING CHIP
  • KV21VSK DEAD - LIGHTNING STIKE TOP223 ON STBY PSU, FUSE , BRIDGE RECT & CHOPPER TFMR OF STBY PSU HAD BURNED OFF WIRE - ABLE TO REPAIR
  • KV21VSK DEAD TOP223 ON STBY PSU,FUSE,BRIDGE RECT & CHOPPER TFMR OF STBY PSU
  • KV21VX-IMT FIELD Q551, Q553, Q554 AND Q555. C556, 4.7UF, 160V AND C560 470UF.
  • KV21VX-IMT ROLLING , UPC1377C
  • KV21VXIMT FIELD COLLAPSE - Q551,553,554 & 555 & C556 4UF7 160V & C560 470UF
  • KV21VXIMT ROLLING - MAY BE INT UFPC1377C TIMEBASE GEN CHIP
  • KV21VXIMT; ROLLING UPC1377C.
  • KV21X1 DEAD REPLACE IC600,D603,R601,R605,Q601
  • KV21X1U DEAD. ON/OFF SWITCH
  • KV21X4U DEAD, SE135N IC601 2SC2389S R Q603
  • KV21X4U NO PIC LED BLINKS TWICE RESOLDER IC604
  • KV21X4U NO PICTURE LED BLINKS TWICE RESOLDER IC604
  • KV21X5U FE1/FE1A
  • KV21X5U FE1 SEE TV MAG SEPT02
  • KV21X5U FE1 DEAD 2 FLASHES D512 Q703(BF420),Q704(BF421)AND Q713(BF420) D701
  • KV21X5U FE1 DEAD 2 FLASHES D701(5.6V ZENER) D705,1SS133T(1N4148). ON CRT BASE
  • KV21XMTU FAINT PIC.,RESETTING THE CONTRAST CONTROL CLEARED IT
  • KV21XMTU INT NO PIC, L807 10UH
  • 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 SUPPORT THE CURRENT LIMITING RESISTORS. BOARD NUMBER IS A1346296A 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 BURNED AREA. ANOTHER PIECE OF PERF BOARD MATERIAL WAS CUT AND SHAPED 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. EPOXY WAS USED ON THE NEWLY INSERTED BOARD MATERIAL TO FIX IT IN POSITION.
  • KP41T15 UNIT IS TURNING ON. TIMER LIGHT FLASHES AT TURNS 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
  • KP41T15. UNIT HAS COOLANT LEAK WHICH DESTROYED THE "E" BOARD.UNIT WILL NEED A REPLACEMENT "E" BOARD.
  • 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.  
  • KP41T25 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.
  • 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 REPLACES THE FLYBACK WITH NO EFFECT IN THE SYMPTOM.  
  • SONY KF60XBR800TV WILL ATTEMPT TO TURN ON BUT THE TIMER LED WILL CONTINUALLY BLINK 5 TIMES SLOW THEN 5 TIMES FAST AND 5 TIME PAUSE.THE LAMP DRIVER UNIT DEFECTIVE PART# 146851011
  • SONY KP41EXR96 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 KP41EXR96 TV 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 TV. DEAD. SONY ANU1 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 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 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 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 872920017. THE SPARK GAP PN# 151772931 WITH LOCATIONS OF SG702, SG732, SG762.
  • 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

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