Question about JVC AV-27020 TV
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Posted on Jan 02, 2017
SOURCE: tv trouble shooting
1)Check secondary fuse devices. 2)Check horiz output xistor=shorted? 3)replace w/equiv.or better part. 4)Check solder connects in horiz drive circuit. Replace small electrolytic filter cap in base circuit of horiz o/p==horiz drive xformer and xistor area,typically 1mf/160v,C531? 2b)not shorted==do step 4 anyway 5)still blinking?==check vert o/p,audio o/p and regulated o/p's
Posted on Oct 02, 2007
SOURCE: JVC AV-35750 TV
I changed capacitor C926 (1000Uf 16V) on main board. It solved the problem. I went with 1000uF 63V as it was readily available...it's okay to go with higher voltage. It was hard to fit it on because of the larger size but it worked.
Posted on Dec 07, 2008
Try to unplugged to the power outlet for 2 minutes, and then power on. Or for the meantime if it have protection circuit like surge protector disconnect that for the meantime. And then power it on.
If not there's maybe a high voltage circuitry problem if this is a crt type tv.
Posted on Apr 30, 2009
The TV is on protect mode.
Try first leaving the TV power cord unplugged for some times, let say one hour or so.
Also ensure that the fault is not coming from a faulty receiver box sending bad signal, check if you get same problem with no receiver box or dvd connected.
If that does not work, and you keep having a flashing led on front of the TV, and tv turning off by itself after a while, that indicates a fault condition.
The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible reasons.
1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.
2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , startingthe flashing light.
If you are in situation one, then theTV will reset just unplugging power cord for one or two hours,sometimes even minutes.
If you are in situation 2 , then there is an internal fault.
Common faults that can occur are a blown capacitor on power board, a convergence IC has blown, or a fault on Digital board.
Check also the video cable or any external connection cable, if the cable is shorting, or the connector is bad, you can get same flashing state because of the video cable.
If under warranty contact the manufacturer ringing the number on the user manual
If you want to repair at your own expenses, just locate any good qualified repairer.
Posted on May 22, 2009
SOURCE: When I turn the TV power on, the TV picture won't display, but the timer display (red blinking light) blinks momentarily and then clicks off. What is the problem and how much would it cost to have rep
check the horinzontal out transistors. call qualified personnel to fix.
Posted on May 30, 2009
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