Two of the people have this same tv and it is doing the same problem.Sometimes it will come on and most of the time not this has to be a common problem.I can fix the problem if i know where to look i have an elctronics background but this could be as simple as a cold solder joint or a board with no schematic its like finding a neddle in a haystack. any help please!! this has to be a common problem with both tvs doing the same thing.
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This idea may be worth a try. Look at the buttons on your remote. If you see a button that is marked "TV" give that button a push and then give the "Power" button a push. Wait for a while! sometimes this takes a while to turn the TV on or off. You may have to do this a couple of times depending if the power was off or on when you started doing this. If you started with the set off, sometimes it takes a while for the set to turn on.
The main tv Tuner signal board have problems or it is dying or might be dead already.But sometimes this tv will still work and can be used,i have the same tv have the same problems it work for me all the times.By doing this process.Everytimes Power and OPC lights blinks.Just push the remote power switch again for tv to repower the tv power and OPC lights again,have go thought this process pushing power remote switch again have to do this like 3 or 4 times sometimes before the tv to work.Tries websites like Shopjimmy.com or Ebay.com to buy a whole new refurbish main tv Tuner signal board for the replacement.
Do you mean that your set operates sometimes and other times it won't? If it's never working and the power light is blinking that would indicate there is a failure in the power supply or the deflection circuitry. Either of which is not an easy fix. If it works normally sometimes and not others it indicates that you have an intermittent problem which is usually caused by failed soldered connections someplace on the main board.
I had the same exact thing happen. I think it's related to a failed firmware update attempt after reading a post on the AVS forum of a guy who also had this problem on this TV. What I did is plug back in the USB drive with the firmware update on it that I had used earlier, and the TV started right up.
If your TV has more then 1500-2000 hours of usage chances are the power board is starting to fail due to the amount of heat that the parts are expose to when the TV is on. There seems to be a high failure rate on power supplies due to overheating.
The solution to get the TV working properly will be to have a new power board or repair the on inside your TV.
Let me know if you require further assistance.