another 42jp350 plasma turns on but....

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  • bullpeters
    New Member
    • Feb 2015
    • 4
    • australia
    #1

    another 42jp350 plasma turns on but....

    My LG 42JP350 plasma, turns on but no sound or picture. the power supply is OK, it outputs the correct voltage. the ZSUS and XSUS heatsinks warm up, some warmer than others, but they are all warm. I assume they are ok because the power supply powers up and stays on. the power led responds to the remote commands, there is just no sound or picture. There is no brightness at all on the screen.
    Is the plasma screen gone?
    your thoughts welcomed
    Mick
    Tags: None
    • sordids999
      Badcaps Legend
      • May 2013
      • 2154
      • uk
      #2
      Re: another 42jp350 plasma turns on but....

      Vs/Va voltages ok ?
      Last edited by sordids999; 02-21-2015, 04:46 AM.

        Comment

        • tw2005
          Badcaps Legend
          • Oct 2011
          • 6458
          • Australia
          #3
          Re: another 42jp350 plasma turns on but....

          did you mean ysus and zsus heatsinks warm? might be worth isolating the main av board and jumper the test pattern generator on the logic ctrl board

            Comment

            • bullpeters
              New Member
              • Feb 2015
              • 4
              • australia
              #4
              Re: another 42jp350 plasma turns on but....

              More information please.
              test pattern generator?
              Yes xsus etc heatsinks
              more information about testing please

                Comment

                • tom66
                  EVs Rule
                  • Apr 2011
                  • 32560
                  • UK
                  #5
                  Re: another 42jp350 plasma turns on but....

                  Can you supply some pictures of the parts in your TV...
                  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

                    • tw2005
                      Badcaps Legend
                      • Oct 2011
                      • 6458
                      • Australia
                      #6
                      Re: another 42jp350 plasma turns on but....

                      #
                      Attached Files

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                        • bullpeters
                          New Member
                          • Feb 2015
                          • 4
                          • australia
                          #7
                          Re: another 42jp350 plasma turns on but....

                          TW2005 Awesome, just what i need. i will hook up the scope and have a look this afternoon. you have ll been very helpful, will let you know how it goes

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