JVC TV Repair: Common Faults and Solutions.


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Search: JVC
Results: 432

JVC Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
JVCAV25SX1EK JA
Int pic blanking outTda8350q vertical output chip (ic401). if r971 if fitted & overheating, remove it (should not be fitted in uk models)
JVCAV25SX1EK JA
Flickering/flashing picFop chip replacement seems to have cured it
JVCAV25SX1EK JA
Flickering & flashing picFop chip
JVCAV25SX1EK
Shuts down almost straight after sw onHt correct but eht high due to c1521 3,800pf 1.5kv reduced cap
JVCAV25SX1EK
No soundIc1952 kia7805pi 5v reg
JVCAV25SX1EK
No soundIc952 5v supply to dolby pcb low, check for o/c l601 n10 ccct prot. dis a mute pin 8 ic601 to restore sound. fault could be due to micro or eeprom caused by crt flashover
JVCAV25SX1EK
Int field collapse with it turning offDry joints around fop
JVCAV25SX1EK
Field - top crampTda8350q chip faulty
JVCAV25SD4EK
Burring noise for first 20 minsC409 100µ 65v on dolby pcb
JVCAV25S4EK
No vsm option & may come on in av modeBefore you change the ic, go into service mode (press display and vsm standard keys on the remote). go through all of the deflection settings and write down the values (don't forget to record 16:9 mode as well as 4:3) as you will need to program these into the new eeprom. when in service mode, press display and vsm standard keys again and the screen will show "system constant". this determines which facilities the set has (text, surround sound, etc.) you should also record these and program them into the new ic
JVCAV25S4EK
No sound/piv via tuner - ok via scart4mhz xtal in tuner can
JVCAV25S2EK
Switches on , eht rises then goes to standbyPossible corrupt eeprom, remove and set should switch on
JVCAV25S2EK
No start up after initial eht rush - reverts to st/byEeprom corrupt - remove eeprom to test (should then come on with snowy screen) pt no cat93c66p & prog with r/c pt no rm871e
JVCAV25S1EK MXII
Unstable pic with line jitterVideo o/p from if module has ragged sync pulses - 1µ elect cap in agc feed
JVCAV25S1EK MK2
Always comes on in st/by - sometimes at full volEeprom ic104 corrupt - pt no cat93c66p
JVCAV25S1EK
Shuts down immediately after sw onD521 by228 s/c, c468 47µ , r526 0r2
JVCAV25S1EK
Shuts down at sw onD521 by228 s/c, c468 47µ, r526 0r22?
JVCAV25S1EK
No line driveR903 2.2k base bias to q902 slightly high
JVCAV25S1EK
Led goes red, then green then off at sw on - no startR526 39r, c458 4µ7 50v & d521 by228 in e/w cct
JVCAV25S1EK
Led comes on and then goes red then offCheck for s/c e/w stage r526, c458 and d521 39Ω, 4.7mfd50v and by228