SAMSUNG PS50C7705YS loss power

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  • Munem2x
    New Member
    • Dec 2018
    • 7
    • Serbia
    #1

    SAMSUNG PS50C7705YS loss power

    I have Tv with some strange problem
    Samsung
    Model:PS50C7705YS
    Model Code:PS50C7705YSXXE

    Problem:When everything is connected power drop fast(from 211v to 0v) with quick flash on screen.When i disconnect ribbon cable(YSUS) from T-CON,Vs stay normal (211v).

    Any suggestion?
    Attached Files
    Last edited by Munem2x; 12-03-2018, 12:25 PM. Reason: Problem update
    Tags: None
    • Andrew F. Ali
      Badcaps Legend
      • Jan 2014
      • 2450
      • Trinidad & Tobago
      #2
      Re: SAMSUNG PS50C7705YS loss power

      Disconnect the connector with the Vs voltage going to the Y-sus and Z-sus Bds. Connect a 230V or two 120V household bulb/s across Vs and GND. Apply the ac. If the PSU is good the bulb/s will light up bright and remain ON. Problem is on another board. If this does not happen PSU is bad.

        Comment

        • Munem2x
          New Member
          • Dec 2018
          • 7
          • Serbia
          #3
          Re: SAMSUNG PS50C7705YS loss power

          Bulb works normally....
          Any other suggestion?

            Comment

            • Munem2x
              New Member
              • Dec 2018
              • 7
              • Serbia
              #4
              Re: SAMSUNG PS50C7705YS loss power

              Look like T-Con board can be problem.... When i disconnect cable from t-con board TV have normal voltages

                Comment

                • Munem2x
                  New Member
                  • Dec 2018
                  • 7
                  • Serbia
                  #5
                  Re: SAMSUNG PS50C7705YS loss power

                  after few test and youtube videos,problem is Y buffer board,shorted chip

                    Comment

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