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SAMSUNG PS50C7705YS loss power

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    #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
    #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.

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      #3
      Re: SAMSUNG PS50C7705YS loss power

      Bulb works normally....
      Any other suggestion?

      Comment

        #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

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          #5
          Re: SAMSUNG PS50C7705YS loss power

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

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