LG 50PB660V No picture but sound

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  • Bremdok
    New Member
    • Apr 2019
    • 3
    • Russia
    #1

    LG 50PB660V No picture but sound

    Hi everyone!
    Iam have plasma LG with faulty YSUS EBR77360401.
    No picture but sound. Problem like this thread.
    No green flash light in CTRL. No power 18V on YSUS.
    I tried to change C205 Capicator under 3 resistors on lower half ysus because it burned, but it did not help.
    I need any idea.

    Thanks!
    Last edited by Bremdok; 04-30-2019, 01:58 AM.
    Tags: None
    • Unspun01
      Badcaps Veteran
      • Jun 2011
      • 349
      • Canada
      #2
      Re: LG 50PB660V No picture but sound

      I repaired one of these YSUS boards before.

      You replaced C205, but did you test all of the other similar capacitors across the board? It's possible more than one are bad.

      Measure across C205 and ensure there are no more shorts.

      On my board, I replaced C205, but I believe I also had to replace the surface mount MOSFET nearby also under the 3 resistors.

      See if that transistor measures short circuit.

        Comment

        • Bremdok
          New Member
          • Apr 2019
          • 3
          • Russia
          #3
          Re: LG 50PB660V No picture but sound

          Thank you!
          D9N40 under the 3 resistor realy has been destroyed.
          I replaced his and check other capicators in the board. VS voltage has stabilized. But no 18v. 3.7V instead.

            Comment

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