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Tv powers on but screen is still black

Tv was working fine then screen just went black. The power light is still on so I know the tv powers on but the screen is just black. Tried unplugging for an hour the re-plugging but that did not work.

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  • F.Payne Apr 29, 2012

    Take the back off and be very careful high voltage on power supply. You will need to test the output voltage on the power supply with a multimeter for DC voltage. On your power supply board should be voltage readings for the pins. Set your meter to DC voltage reading above 24v and test the pins making sure you ground your meter probe to the chasis. If the reading are correct on your power supply secondary side pin out then you have a faulty mainboard. This is the board that connects to the power supply. You should have 5v standby and depending on the pin out voltage should be 12.6v or 24v on the pins

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Ur Tuner signal board is dead,must replaced this board to work.

Posted on Feb 06, 2010

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