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Try a power drain:
1. Unplug the TV's power cable so that the TV is not grounded to the house. Do not simply turn off a powerbar if one is in use.
2. Press and HOLD the TV's own power button for one minute to drain the capacitors.
3. Plug the TV back into a wall outlet versus a powerbar, if one is in use and see if this makes a difference.
If the TV still won't turn on but you have a LED light flashing, the problem is usually with the TV's mainboard and not the power supply or the LED wouldn't even be on. Service is likely required.
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U check the power sourced like the other equipments that plug into that a/c power outlet work?Yes,than tries tv unplug,replug it back like about an hour later by letting the tv to do a resetting itself back to the factory setting.The tv now it should be working again.If the tv still have the same result?Yes,than the tv have a power supply board it is dead.That the board where the power a/c cord plug into it.U have some basic mechanical skills like take things aparts and putting it back togther again?Yes,tries websites like Shopjimmy.com,Ebay.com to buy a whole new refurbish power suppy board for the replacement.
It could be the power or main board that is giving issues...if your able pull the back off and look for a pin on connector marked PSON or PON...that is line that tells the power board to come out of sleeping and go to work, you should see a change in the voltage when the on button is pushed, if you do then the main is doing its work and its the main if you don't see a voltage change then chances are its the power board
If the fuse burned out the the tv would not turn on at all. When the tv is on is the back light still on? If its not its probably the back light that needs changing. If its on then its one of the circuit boards.
Hi! Turn on TV and press the TV button by aiming it to TV, the red LED light will blink once. Press the MUTE/SEARCH button. The LED will shut off first then light up. When the TV turns off, press the OK button to store this code.
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If your LCD has a defective power supply module will cause the following symptoms: No Display and no Sound, Then Power indicate light changes from Green to Red.
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