50pm680t not turning on

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  • thuss
    Badcaps Veteran
    • Jul 2012
    • 321
    • uk
    #1

    50pm680t not turning on

    Hi

    My mates tv wont turn on. Standby light turns on and is on constantly but when the remote is pressed the standby light blinks once and goes back to red.

    I've disconnected the psu from the main board and attached 2 X 0.25watt resistors 330ohm (as per bdacaps page 2 Re: LG Plasma 50PA5500) and disconnected the lvds cribbon from the tcon board (with a linkbetween ext and auto gen) hoping to get the patterns but the tv still didnt turn on.

    Has anybody repaired one of these power supplys before? (I checked the green cap and its reading 22ohm)

    Any help would be appreciated
    Attached Files
    Last edited by thuss; 11-24-2016, 07:29 PM.
    Tags: None
    • dick_barton
      Badcaps Legend
      • Aug 2015
      • 6643
      • Wales
      #2
      Re: 50pm680t not turning on

      Unsolder and lift one end of the green cap and measure again. It should read OL when tested.
      Willing to help but I'm no expert.

        Comment

        • thuss
          Badcaps Veteran
          • Jul 2012
          • 321
          • uk
          #3
          Re: 50pm680t not turning on

          My mistake I meant 22uf.

          The green cap has the following written on it FL 1.25KV 223H S'M36 so I assume the above reading is fine?
          Last edited by thuss; 11-26-2016, 10:48 PM.

            Comment

            • thuss
              Badcaps Veteran
              • Jul 2012
              • 321
              • uk
              #4
              Re: 50pm680t not turning on

              Anyone?

              When I switch the tv on Im getting 17v etc for a split second, the main board flashes green and then back to a red standby light.

              Any help would be appreciated and one thing else the power supply does not click

                Comment

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