LG 50PT350 help

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

    LG 50PT350 help

    I picked up a LG 50" plasma to work on. When I got it home to see what it was doing it had a burnt 102k 1kv capacitor on the Y-sus board. I replaced it and it's still not running but the Y-sus board has a buzzing noise. Here is a picture of the capacitor I replaced.
    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
    Tags: None
    • sleeper123
      Member
      • Aug 2016
      • 17
      • United States
      #2
      Re: LG 50PT350 help

      Nevermind. When I checked the power supply board I forgot to plug the main board back in. TV is up and running. 2nd TV repair is in the books.
      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: LG 50PT350 help

          Here it is up and running.
          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: LG 50PT350 help

              Here is the bad capacitor that I replaced.
              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

                • nautical naturist
                  New Member
                  • Sep 2014
                  • 8
                  • USA
                  #5
                  Re: LG 50PT350 help

                  As the maintenance manager for a restaurant chain on occasion I am called on to repair a TV. The latest has stumped me.
                  I have an LG50pt350 with no pic or sound. The power button and remote will cause a relay on the main power board to click three times, then shut down. I replaced the Zsus board and gained sound and a bad picture. The picture is dark and hard to see, almost black and white, but not quite. I am wondering about the Ysus board and two Y drivers. Any opinions or suggestions?
                  Thanks,
                  NauticalNaturist.

                    Comment

                    • ReeceyBurger123
                      Never Give Up !
                      • May 2014
                      • 7325
                      • Britain
                      #6
                      Re: LG 50PT350 help

                      Originally posted by nautical naturist
                      As the maintenance manager for a restaurant chain on occasion I am called on to repair a TV. The latest has stumped me.
                      I have an LG50pt350 with no pic or sound. The power button and remote will cause a relay on the main power board to click three times, then shut down. I replaced the Zsus board and gained sound and a bad picture. The picture is dark and hard to see, almost black and white, but not quite. I am wondering about the Ysus board and two Y drivers. Any opinions or suggestions?
                      Thanks,
                      NauticalNaturist.
                      Picture of the issue please ? Sounds to me like a failed mainboard.
                      Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

                      https://www.facebook.com/Telford-Tel...7894576335359/

                        Comment

                        • sleeper123
                          Member
                          • Aug 2016
                          • 17
                          • United States
                          #7
                          Re: LG 50PT350 help

                          My symptoms weren't like that. As soon as the tv was plugged in that capacitor started to arc. From what I have read power cycling like you describe comes from a bad IC on the main board like Reecey stated.
                          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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