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blinking 4 times and won't turn on

TH-L37S25A Panasonic viera blinking 4 times and won't turn on!!

I've tried your methods 50 panasonic Viera model no.TC-P50C2 won't turn on. red light blinks and no luck any ideas

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krystaldavid2549 the 4 blink code is known as power SOS. You can try and disconnect the LVDS cable and turn your TV on.

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If it turns on (no screen) then your issues is the LCD panel (really bad) if it is not than you may have issues with DTV12v line. The usual cause for that is the DC-DC converter on the PA board. Take a look at that and see if you find something obvious, like burned or missing components. You'll need the schematics and a multimeter to check out the board, or replace it. Let us know if you are willing to go for it:-) Post some images of all of your boards and the layout as it appears ion the back of your TV with the rear cover removed. Use this guide for that, it will allow us to see what you see.

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TC-P42G20 Panasonic blinks 4 times. When power supply to y board removed the red light still on but no picture (of course). If the power supply to the other board to the right removed it blinks 10 times. What to do ?

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