Samsung PN50A510P3F help

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  • sleeper123
    Member
    • Aug 2016
    • 17
    • United States
    #1

    Samsung PN50A510P3F help

    I have a Samsung plasma that powers on with a relay click and powers down. It starts as soon as its plugged in and doesn't stop until I unplug it. I replaced IC101 and C102 on the main board with no change. I can jump PS-ON to GND to keep it from cycling to get voltage readings.
    VA, VS, -VSC, VE are all good.
    On the harness from the power supply to main board with ps-on jumped I get these voltages:
    nc___________ps-on
    gnd__________stby- 5.1v
    gnd__________gnd
    18v- 18.1v____18v- 17.9
    gnd__________gnd
    5.3v- 5.1v____5.3v- 5.2v
    5.3v- 5.1v____5.3v- 5.2
    gnd__________gnd
    gnd__________12v- 12.1v
    12v- 12.1v____12v- 12.1v
    nc___________nc

    Harness to logic board

    gnd
    vson- 3.1v
    gnd
    pson- .3v
    gnd
    5.3v- 5.2v
    gnd
    5.3v- 5.2v
    5.3v- 5.2v
    5.3v- 5.2v
    Last edited by sleeper123; 09-06-2016, 09:19 PM.
    TVs fixed:
    Vizio E470i-A0
    LG 50PT350
    Vizio E470i-A0
    LG 47LN5400
    LG 47LN5750
    Vizio E470i-A0
    Vizio VP322
    Magnavox 40ME325V/F7
    Emerson LF501EM5F
    Tags: None
    • sleeper123
      Member
      • Aug 2016
      • 17
      • United States
      #2
      Re: Samsung PN50A510P3F help

      Power board
      Attached Files
      Last edited by sleeper123; 09-06-2016, 08:54 PM.
      TVs fixed:
      Vizio E470i-A0
      LG 50PT350
      Vizio E470i-A0
      LG 47LN5400
      LG 47LN5750
      Vizio E470i-A0
      Vizio VP322
      Magnavox 40ME325V/F7
      Emerson LF501EM5F

        Comment

        • sleeper123
          Member
          • Aug 2016
          • 17
          • United States
          #3
          Re: Samsung PN50A510P3F help

          Power board
          Attached Files
          TVs fixed:
          Vizio E470i-A0
          LG 50PT350
          Vizio E470i-A0
          LG 47LN5400
          LG 47LN5750
          Vizio E470i-A0
          Vizio VP322
          Magnavox 40ME325V/F7
          Emerson LF501EM5F

            Comment

            • sleeper123
              Member
              • Aug 2016
              • 17
              • United States
              #4
              Re: Samsung PN50A510P3F help

              Main board
              Attached Files
              TVs fixed:
              Vizio E470i-A0
              LG 50PT350
              Vizio E470i-A0
              LG 47LN5400
              LG 47LN5750
              Vizio E470i-A0
              Vizio VP322
              Magnavox 40ME325V/F7
              Emerson LF501EM5F

                Comment

                • sleeper123
                  Member
                  • Aug 2016
                  • 17
                  • United States
                  #5
                  Re: Samsung PN50A510P3F help

                  Main board bottom
                  Attached Files
                  Last edited by sleeper123; 09-06-2016, 09:20 PM.
                  TVs fixed:
                  Vizio E470i-A0
                  LG 50PT350
                  Vizio E470i-A0
                  LG 47LN5400
                  LG 47LN5750
                  Vizio E470i-A0
                  Vizio VP322
                  Magnavox 40ME325V/F7
                  Emerson LF501EM5F

                    Comment

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