Sanyo DP42740 - Press power button, green light comes on - then goes out

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  • zdsh07p9
    Senior Member
    • Nov 2013
    • 155
    • United States

    #1

    Sanyo DP42740 - Press power button, green light comes on - then goes out

    I haven't opened this one yet but I will open it later tonight when I get back. I have a Sanyo DP42740-03 and when I press the power button I get a green light for about 3 seconds then it goes out. Need pics of the boards? it seems to me that a lot of people have troubles with their dp42740's
  • zdsh07p9
    Senior Member
    • Nov 2013
    • 155
    • United States

    #2
    Re: Sanyo DP42740 - Press power button, green light comes on - then goes out

    Okay I just replaced almost all the boards on this tv but I may have made a mistake. I left the old YSUS board in there, with a new logic board, power board, and XSUS board. Is there anything on the old YSUS that could blow something on the new power board? Because when I powered it on with the old YSUS it sounded like something went but I could barely hear it. Now it does the same old thing. BUT it stays on for 5-6 seconds now instead of 3 seconds.

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    • zdsh07p9
      Senior Member
      • Nov 2013
      • 155
      • United States

      #3
      Re: Sanyo DP42740 - Press power button, green light comes on - then goes out

      But when I turn it on I get around 190v going to YSUS and XSus (or SS). I also have a new mainboard from shopjimmy that doesn't change anything when I put it in

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      • Alastair E
        Chief Womble
        • Mar 2013
        • 1963
        • U.K.

        #4
        Re: Sanyo DP42740 - Press power button, green light comes on - then goes out

        Need pictures of the boards to identify Who made the Plasma chassis....

        I suspect Panasonic as you refer to SC and SS boards, but without seeing--Who knows, and more to the point--What Model chassis!
        TELEFIX

        How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
        http://www.irf.com/technical-info/appnotes/an-1088.pdf
        PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!

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