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Re: can't turn my tv on
Ok first question do u even get a blue led glowing in the bottom left front of your tv ? More than likely you have a cracked power supply ! Its one of those things that was a design flaw. If your lucky and its a small crack it can be soldered back together. If not you will need a replacement. There is a diode and a FET that will more that likely be replaced also.
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Try unplugging from outlet for fifteen seconds. Press the power button for a few seconds "before" plugging back in. Now plug back into the wall outlet and try turning it on to see if this reset the TV's settings.
This sounds like it might be a main board issue. Depending on the television brand there are different replacements you can get at different prices. I would try unplugging the tv from the wall first then try plugging it back in while holding channel up/volume up on the tv as you are plugging it back into the wall. If this doesn't change anything it is most likely a problem with your main board.
It sounds that, the memory IC to your TV has damaged. This IC can be located very near to main system control IC. A very small one, with 8 solder terminals. Even though it is very small, function of it while the TV works is great. The work is a semi-skilled one, and you must have some knowledge in electronics to proceed.
Sounds like there is a problem with the power supply. Try unplugging the T.V. and hold the power button for 30 seconds. Plug the T.V. back in and see if that helps. If it doesn't try switching to another outlet, and if that doesn't work then you may need to replace the power supply which would probably cost anywhere from 140 to 200 for one.
Unplug the set and hold the power button for 30 seconds. Plug it back in and see if that fixes it. If it doesn't then it sounds like there is a problem on the board underneath the power button. Something isn't allowing the circuit to be cut.