Question about Sharp Aquos LC-20B2U 20 in. LCD Television

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MY POWER KEEP GOING OF SHARP lc-20b2ua

MY POWER KEEP GOING OF and when i un plug the TV it it comes back on and then go back off what is going on SHARP LC-20B2UA

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I have the same problem. I fixed it for about 3 months by wrapping duct tape around the large pack midway in the cord (where the wall plug and TV line plug in). But, it started up again this week. I can't get the "box" open either, but that is where the problem is. Mine is mounted to the wall, so no one ever touches the cord. I'll let you know what we find when we get it opened.

Posted on Dec 29, 2010

  • Jesse Walters
    Jesse Walters Feb 22, 2011

    I found there is a dead resistor somewhere that is in line with the ground side of the inverter coils. So If you get sound but no picture (or it goes almost immediately dark after power on, it is sensing a voltage surge or drain. I put a 12 v dome light bulb in line with the common ground from one coil to chassis to restore a completely dead screen and all bulbs are now on with one coil thusly semi-grounded.. Yes - weird. I studied the mobo and supply all 4 13v connector pins from one standard spliced wall wart.

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