Question about Sharp LC-42D43U 42 in. LCD HDTV

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Picture Problem with Sharp LCD Model LC-42D43U

Hitting PWR, the green lite on front panel comes on and picture appears for one second THEN the screen goes blank. Any help would be appreciated. Thank you! ahart_2301@yahoo.com

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  • ahart_2301 Oct 16, 2008

    Backlight inverter??? U mean the Main board module on the left of the Pwr Supply right????

  • ahart_2301 Oct 17, 2008

    Ok, we checked all ICs (caps, fuses, etc.). All are good and not burned. I can see On-Scrn Display (OSD) for two secs then blank scrn. We the Main Module between the Pwr Supp and the Slave Inverter (Left hand side) is bad... Your thoughts again... Thx!

  • freelanderyx Jan 08, 2009

    The picture appears for a second then disappears - eventually after switching on and off it stays on. May take up to 40 trys.

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Hi...there,
It's seems your backlight inverter are busted... Need to replaced a new one.

Posted on Oct 15, 2008

  • Cj T
    Cj T Oct 16, 2008

    No, it's the power supply with a built-in inverter. There should be a couple of over-heated capacitors there... Check for those caps for bulged on top. If not sure replaced all the caps...

  • Cj T
    Cj T Oct 18, 2008

    Sure, but you can't always tell all the caps are good...just b'cuz there no burnt mark showing. You'll need a good ESR / Low Ohms Meter to test all the capacitors for leaked too. Yeah sure, if it dies on 2 seconds...that indicated the inverter are busted... need to replaced those busted caps.

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