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Repair tips

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: 25
DaewooGB21F1T2Dead - 4A mains fuse blownC842 4700pf blue bead cap burnt & short14-09-04
JVCAU21F1Int signalsDry joint IC522 5v reg mounted on central heatsink14-09-04

JVCAV-21F1EKBright white raster with flyback linesIC101 TEA5105 on crt base14-09-04
JVCAV-21F1EKDead except for LED`s flashingIC801(TA8216) S/C on LHS pcb 14-09-04
JVCAV21F1EKBright raster with fback linesIC101 TEA5105 on crt base14-09-04
JVCAV21F1EKDull green pic slow to appearCRT14-09-04
JVCAV21F1EKNo pic - sound okTEA5101A RGB driver chip14-09-04
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
Proline28N1 F19Dead after LOPTx arcingR619 100R / IC600 STV5112 / TR16 BU508D / T3 LOPTX - now powers up with blank screen - Txt OK. Reset EEPROM in serv mode after noting settings14-09-04
SonyKV14F1, KV21F1No pic - raster visible when A1s turned upIC902 L78L33 3.3V reg feeds Txt I/C on the bottom VCR board14-09-04
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