Question about JVC HD56G887 56" HDTV
I have a 56" JVC Rear projection TV that has had a problem with powering on. The service tech came out and took the guts out, went back to his shop and worked on it, and brought it back. Basically, I am still having the same problem (even with a new lamp). When you press the power button, you hear a click, then the fan tries to fire up, and it quickly shuts down with the lamp and power LEDs flashing in an alternating order. Sometimes it will eventually come back on after pressing the power button a few times in a row. But mostly, it refuses to power on at all. Been working with JVC but they arent helping me at all. They say I have to work with my local repair shop (they dont answer my calls anymore, and they had no idea what was wrong in the first place). Any ideas would greatly help out!
There might be some features that the universal remotes aren't able to do. To perform the convergence alignment you should have the original remote.
Do you have the user manual or service manual?
The service manual will explain this process better.
Posted on Apr 10, 2008
we found that it is an auto shut off system on the TV due to over heating. The lamp, if not cooled correctly shuts down. We added a mini fan in the back and it seems to work fine now.
Posted on Jan 25, 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 21, 2009
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