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Panasonic TC-32LX85 power relay cycling, now dead.

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    Panasonic TC-32LX85 power relay cycling, now dead.

    Hi everyone, I have a Panasonic TC-32LX85 that over the past week had a relay that started cycling really bad upon starting the set. This is not your usual Panasonic led blink error code issue, this was the relay turning over every second for minutes on end. Since yesterday, the set is now totally dead and shows no signs of life. I took the back off to get at the power board and checked the fuse and it still has continuity and very low resistance, so no issues there. Caps all look good and there are also no outward signs of issues (scorch marks, burned components, etc)

    I did try and take some measurements on the standby5v line and other lines on the rail, but I have no voltages there. The power board number is TNPA4484 and pictures are below.

    Any thoughts on how I can proceed troubleshooting this would be great.
    Last edited by waitery; 05-27-2013, 09:39 PM.

    #2
    Re: Panasonic TC-32LX85 power relay cycling, now dead.

    Here are the pics of the power board, both front and back.
    Attached Files

    Comment


      #3
      Re: Panasonic TC-32LX85 power relay cycling, now dead.

      You may want to download the service manual for it first:
      Never stop learning
      Basic LCD TV and Monitor troubleshooting guides.
      http://www.badcaps.net/forum/showthr...956#post305956

      Voltage Regulator (LDO) testing:
      http://www.badcaps.net/forum/showthr...999#post300999

      Inverter testing using old CFL:
      http://www.badcaps.net/forum/showthr...er+testing+cfl

      Tear down pictures : Hit the ">" Show Albums and stories" on the left side
      http://s807.photobucket.com/user/budm/library/

      TV Factory reset codes listing:
      http://www.badcaps.net/forum/showthread.php?t=24809

      Comment


        #4
        Re: Panasonic TC-32LX85 power relay cycling, now dead.

        Wrong thread disregard..
        Last edited by kevinm34232; 09-29-2014, 05:34 PM.

        Comment


          #5
          Re: Panasonic TC-32LX85 power relay cycling, now dead.

          I think you should remove that E-mail! he may get lots of junk mails.

          Last edited by budm; 09-29-2014, 05:35 PM.
          Never stop learning
          Basic LCD TV and Monitor troubleshooting guides.
          http://www.badcaps.net/forum/showthr...956#post305956

          Voltage Regulator (LDO) testing:
          http://www.badcaps.net/forum/showthr...999#post300999

          Inverter testing using old CFL:
          http://www.badcaps.net/forum/showthr...er+testing+cfl

          Tear down pictures : Hit the ">" Show Albums and stories" on the left side
          http://s807.photobucket.com/user/budm/library/

          TV Factory reset codes listing:
          http://www.badcaps.net/forum/showthread.php?t=24809

          Comment

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