Sharp Aquos Lc-80LE757U flashing Sharp on screen when plugged in

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  • Diah
    Badcaps Legend
    • Feb 2013
    • 6335
    • Germany

    #21
    Re: Sharp Aquos Lc-80LE757U flashing Sharp on screen when plugged in

    Originally posted by nomoresonys
    I didnt think of that possibility, your replacement powerboard should be very much like this: https://www.shopjimmy.com/sharp-runt...ply-led-board/
    if his PSU replacement match.. then the blown fly out MB NOR start script too.

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    • sefoster
      Member
      • Nov 2022
      • 10
      • USA

      #22
      Re: Sharp Aquos Lc-80LE757U flashing Sharp on screen when plugged in

      Originally posted by Diah
      if his PSU replacement match.. then the blown fly out MB NOR start script too.
      My replacement is a match I ensured before I bought it that it was the same one. even with our new power board and original t-con we had the same issue. We replaced the t-con due to a suggestion from a different post somewhere else. However I need to replace the main board as there are burn marks on that now that weren't there before

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      • Diah
        Badcaps Legend
        • Feb 2013
        • 6335
        • Germany

        #23
        Re: Sharp Aquos Lc-80LE757U flashing Sharp on screen when plugged in

        before you are going to replace MB, need to check the currents on both LED BL sockets.. by each group of LED 1 till LED6. be ware on + & - and note each time when you turn on yours DMM reading for each group.

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        • sefoster
          Member
          • Nov 2022
          • 10
          • USA

          #24
          Re: Sharp Aquos Lc-80LE757U flashing Sharp on screen when plugged in

          There is a spot on the MB that is now burned and it wasn't;t before so I am assuming I will need to replace it as I am not skilled enough to fix anything on there. This is still new to me and I don't want to mess anything else up as I'm not sure of how exactly to test each section. Like I said I'm a newbie so this is a first for me

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