Panasonic TH-65AX800A PSU Issues?

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  • RooTV
    Senior Member
    • Apr 2020
    • 128
    • Australia
    #1

    Panasonic TH-65AX800A PSU Issues?

    Hi all

    I have a Panasonic TH-65AX800A that turns on for about 2 seconds and then turns itself off.

    I got it like this hoping it was just a bad cap and an easy fix.

    I have pulled the power board and cannot see any obvious capacitor damage.

    Is there any other likely causes? Anything else I should check for?

    The power board is
    TNPA5937 2P
    with an additional silver sticker saying
    A1318VAL
    TNPA5937DA
    V1434

    I have tracked down another power supply which has the markings
    TNPA5937 2P

    Except it has an additional sticker stating
    N1140VAJ
    QF V1455
    and this is for a Panasonic TH-65AX800C and not the X800A that I have.

    Would this board be compatible?
    Last edited by RooTV; 04-19-2021, 03:10 AM.
    Tags: None
    • RooTV
      Senior Member
      • Apr 2020
      • 128
      • Australia
      #2
      Re: Panasonic TH-65AX800A PSU Issues?

      Bump

        Comment

        • Scotia
          New Member
          • Jun 2021
          • 2
          • Australia
          #3
          Re: Panasonic TH-65AX800A PSU Issues?

          If the power LED blinks 6 times, the main board is faulty.

            Comment

            • diif
              Badcaps Legend
              • Feb 2014
              • 6978
              • England
              #4
              Re: Panasonic TH-65AX800A PSU Issues?

              How do you know it's the power board. 2 seconds then off is usually LED failure.

                Comment

                • RooTV
                  Senior Member
                  • Apr 2020
                  • 128
                  • Australia
                  #5
                  Re: Panasonic TH-65AX800A PSU Issues?

                  Originally posted by diif
                  How do you know it's the power board. 2 seconds then off is usually LED failure.
                  This is an interesting option.

                  Does anyone know which LED's I would get to replace these? I mean the part number etcc.

                  Im trying to get a replacement before I take the screen out, otherwise I will have to take the screen out twice and that just expands the chances I will crack the screen, so I would rather just do it once

                    Comment

                    • Scotia
                      New Member
                      • Jun 2021
                      • 2
                      • Australia
                      #6
                      Re: Panasonic TH-65AX800A PSU Issues?

                      You can check page 53 of the service manual in ttps://manualzz.com/doc/32289386/2014---lcd-tv
                      You should be able to identify the fault by checking the blinking time of power LED.

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