Question about Sharp Aquos LC-37G4U 37 in. HD-Ready LCD Television

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I have a sharp LC-C3742U which has not been use for a few days, but is connected to Verizon FIOS box. When we turn it on with FIOS remote, the power indication light is green, but no picture and no sound. We tried to turn it off by hitting the power button on the set or with Sharp remote but it just would not turn off. We unplug and replug, the power indicator is on green again and nothing else works and it stuck at the power-on position.

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  • bbmacbeth Sep 10, 2009

    Please tell me what (and where) is the main board and what is the power board as I have no schematic diagram. If to replace as you suggested, what is the name, or number for these boards that can be ordered, and from whom?

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It sounds TV got problem with system control section on main board and board need to be replaced.
Please check supplied volts mentioned on power board towards main board, if supply volts are OK, replace main board. Qualified TV tech is required to test volts.
Click Shop Jimmy for main board info.
Thanks.

Posted on Sep 10, 2009

  • Shahid Electronics
    Shahid Electronics Sep 10, 2009

    Please tell me what (and where) is the main board and what is the power
    board as I have no schematic diagram. If to replace as you suggested,
    what is the name, or number for these boards that can be ordered, and
    from whom?
    ===================================================

    If you follow AC cord of TV that will take you to power supply board.
    I gave you Shop Jimmy link, click that link to see main board image, part number and its price info.
    I would recommend to have qualified TV tech to fix TV if you have not sufficient experience of electronics stuff repair.
    Thanks.



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