Service manuals, schematics, eproms for electrical technicians
JVCAV021
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512.0byte
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TV
EPROM
TV
EPROM
If you get stuck in repairing a defective appliance download this repair information for help. See below.
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Good luck to the repair!
Please do not offer the downloaded file for sell only use it for personal usage!
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JVCAV-021 JVCAV021 JVCAV 021
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Relevant TV forum topics:
Szerbusztok!
Ki tudna valaki segíteni egy Orion 2836MTX-s TV rajzzal?
Köszönöm az eddigieket,de táppal van gondom,előtte el ment a lemágnesezés.
Köszönöm!
József
üdv: a barátom csemetéje ma hozott egy kis LCD tévét és egy gépkocsiba való lejátszót.
Az LCD tévén csak USB csatlakozó van, a lejátszón A/V kimenet.
A kettőt összekötötte USB-3,5mm-es jack kábellel. A testre és egyik adatkábelre kötötte a hangkimenetet, a videojelet a másik adatérintkezőre.
Az árnyékolásokat pedig az USB dugó házára.
Nem akar működni.................
Bálint
üdv: a gyerekek vettek egy LG 42B650V tip televíziót.
A hangot a SCART-ról kivezetve erősítőre kötve hallgatják(scart-RCA kábel)
Internetre állítva nincs hang ezen a kimeneten
Van a hátulján optikai kimenet, ehhez kellene egy átalakító( de milyen?), csak kérdés, hogy netről lesz-e hang.
Van valakinek ilyen irányű tapasztalata?
Bálint
http://www.lg.com/uk/tvs/lg-42LB650V/technical-specifications
This elderly monster arrived with the error “ 4 blinks “ which the manual suggests is a power board fault
There are TWO power boards and a standby power board inside
On removing rear cover there were two swollen 220uf caps on the standby board, sadly replacing them the 4 blinks remained
Swapping the two power boards over[ as they look identical , gives a “ 2 Blink “ error , the limited info in the manual suggesting that the fault is on the lower board [ main 2 ]
Both boards have a PFC voltage of around 380 volts at switch on before the relays click out
I have done cold checks on both boards and there are no obvious differences
As the manual has only a block diagram of the power supply it’s difficult to be sure of values / voltages
Has anybody seen or worked one of these or similar beasts and managed to diagnose the problem
Thanks for looking
Regards Ken
There are TWO power boards and a standby power board inside
On removing rear cover there were two swollen 220uf caps on the standby board, sadly replacing them the 4 blinks remained
Swapping the two power boards over[ as they look identical , gives a “ 2 Blink “ error , the limited info in the manual suggesting that the fault is on the lower board [ main 2 ]
Both boards have a PFC voltage of around 380 volts at switch on before the relays click out
I have done cold checks on both boards and there are no obvious differences
As the manual has only a block diagram of the power supply it’s difficult to be sure of values / voltages
Has anybody seen or worked one of these or similar beasts and managed to diagnose the problem
Thanks for looking
Regards Ken