Samsung pn50a450p1d Y board issue

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  • topfli8979
    Badcaps Veteran
    • Oct 2012
    • 311
    • USA

    #1

    Samsung pn50a450p1d Y board issue

    Have a samsung pn50a450p1d 50 plasma. Powers on then cycles and shuts down repeatedly. Unhooked y board, powers up fine. Anyone fixed or diagnosed one the of these? Y board #lj41-05380. No bulged caps, fuse if fine.
  • tom66
    EVs Rule
    • Apr 2011
    • 32560
    • UK

    #2
    Re: Samsung pn50a450p1d Y board issue

    Pictures! Pictures please?
    Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
    For service manual, schematic, boardview (board view), datasheet, cad - use our search.

    Comment

    • topfli8979
      Badcaps Veteran
      • Oct 2012
      • 311
      • USA

      #3
      Re: Samsung pn50a450p1d Y board issue

      here is y board.
      Attached Files

      Comment

      • tom66
        EVs Rule
        • Apr 2011
        • 32560
        • UK

        #4
        Re: Samsung pn50a450p1d Y board issue

        Out of focus and too brightly lit. But it appears to use a combined buffer. Some FETs on the third heatsink down blow.
        Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
        For service manual, schematic, boardview (board view), datasheet, cad - use our search.

        Comment

        • topfli8979
          Badcaps Veteran
          • Oct 2012
          • 311
          • USA

          #5
          Re: Samsung pn50a450p1d Y board issue

          Sorry for picture quality, I know its horrible. Have yet to invest in a camera that can take detailed photo. I have a surplus of boards out of broken tv's, might be a dumb question, but if its the same size and configuration. Why could I not use fet's off another board even though they are not that part number.

          Comment

          • tom66
            EVs Rule
            • Apr 2011
            • 32560
            • UK

            #6
            Re: Samsung pn50a450p1d Y board issue

            Because you can't use different parts when the circuit is designed for specific types, not all MOSFETs and IGBTs are compatible with each other.
            Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
            For service manual, schematic, boardview (board view), datasheet, cad - use our search.

            Comment

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