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Electronic appliance repair tips database - TV (LCD,TFT,Plasma,Digital), Monitor, VCR, DVD recorder and player, Digital camera, Audio equipment, Microwave ovens, Phone systems, Computer repair

MakeModelProblemSolutionDate
Found: 355
JVCAV21F1EKNo sound or vision - heaters & EHT presentC834 1µ 50v leaky14-09-04
JVCAV21F1EKNo tuning or osdDry joints at trs on long heatsink by psu14-09-04

JVCAV21F1EKSound intDry joint IC501 TDA3810 on daughter board by main audio o/p14-09-04
JVCAV21F1EKWobbly pic - intDry joints VIF/sync proc pcb14-09-04
JVCAV21F1EK JX ChassisNo OSD ot Txt - could be intCheck dry joints reg IC52214-09-04
JVCAV21F1EK JXAft 5 Mins Pic shakes from left to right sometimesC02 or 6Mhz crystal14-09-04
JVCAV21F1EK JXBlank screenBad joints pin 2 LOPTx14-09-04
JVCAV21F1EK JXCOMES ON FOR 10secs WITH LEDS LIT BUT NO PICTURE AREMOVE PLUG "Q" IF SETS POWER SUPPLY THEN RUNS AT 127v REPLACE IC801 TA8216AH14-09-04
JVCAV21F1EK JXDead - int blows BU508AFI LOPTrsCheck for dry joints/resolder double sided video/chroma daughter board where line osc IC203 resides esp links EX001, 002, 004 015 & 019 - caused by int momentary loss of line osc14-09-04
JVCAV21F1EK JXHum bar on picRipple on HT line caused by L2001 in chopper tr base drive o/c14-09-04
JVCAV21F1EK JXInt loss of signals4Mhz Xtal inside synthesis tuner dry joint14-09-04
JVCAV21F1EK JXInt sync after 5 minsC02 tant cap in IF AGC cct14-09-04
JVCAV21F1EK JXInt tuner driftDry joints IC522 5v reg14-09-04
JVCAV21F1EK JXLED comes on for 10 secs then goes off in prot modeWith plug R dis'd to isolate psu from LOP stage still tripped. When plug Q removed (feed to audio chip) set stayed on. IC801 TA8216AH faulty14-09-04
JVCAV21F1EK JXPICTURE LOOKS TO HAVE HUM BAR ON ITL2001 IN CHOPPER BASE FEED OC Pt-No CELC005-2R514-09-04
JVCAV21F1EK JXREPEATED FAILURE IC3101CHANGE C105 TO 4.7uF LINK -VE TO IC3101 HSINK14-09-04
JVCAV21F2EKNo sigs or OSDNo 5v supply - 6R8 2w reg feed res o/c caused by excess current from Txt pcb due to IC002 SDA5243 faulty14-09-04
JVCAV21H1EK JXBlows Q502 LOPTr at sw onD502 BY228 E-W mod diode s/c14-09-04
JVCAV21H1EK JXNo signals or osdIC522 12v reg dry joints14-09-04
JVCAV21H1EK JXVarious int faultsCheck IC522 reg on large heatsink for dry joints14-09-04
JVCAV21H2EKNo sigs or graphics - ok via scartNo i/p to 5v reg IC522 due to R527 6R8 o/c - replace both14-09-04
JVCAV21H2EKNo sigs, OSD, Txt - ok on scart & R/CR527 6R8 1w fusible o/c - near LOPTx14-09-04

JVCAV21H2EKRandom "Nicam" displayed on screenSF012 filter typre 32.9 on Nicam pcb - upgrade to type 33 Pt no CE4260670114-09-04
JVCAV21S2EK"NICAM" RANDOMLY APPEARS ON SCREENREPLACE SF012 (BLUE) ON NICAM PCB14-09-04
JVCAV21SX1No soundOnly 3.5v supply to Dolby pcb - should be 5v - IC952 LM7805 reg14-09-04
JVCAV21SX1EKField - partial collapse - intDry joint C961 2200µ 25v ; 8v smoother14-09-04
JVCAV21SXLEKHigh pitched buzz - sound/pic OKL521 line lin coil vibrating - could also be LOPTx14-09-04
JVCAV21TS1EKLack of height aft 10 minsTDA8351 & check FR552 0R82 2w, FR553 TDA8351 is at fault. Check the supplies lines at this IC. Pin 6 should be 47.3V and Pin 3 should be 14.9V. If this is incorrect check resistors FR552 0R82 2W part No QRH027K-R82M. and resistor FR553 6R8 1/2W part No QRH127J-6R8M. These resistors are at pins 8 and 7 of the LOPTX.14-09-04
JVCAV21TS1EKNo sound Nicam or FM - if Txt selected header appears for 1 sec then reverts to picR619 sm not soldered properly14-09-04
JVCAV21TS2EKField lock in wrong placeTB1227AN IC101 Jungle chip u/s14-09-04
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