Plasma lg 60pn5700 -- self test ok -- but no picture -- help please !

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  • anibal2100
    Anibal
    • Apr 2011
    • 31
    • USA
    #1

    Plasma lg 60pn5700 -- self test ok -- but no picture -- help please !

    Hello everyone !

    Got a LG 60pn5700 with no picture. Replaced the mainboard and still same thing.

    I can turn ON or OFF the TV with no problems. It responds to the remote.

    Shorted the 2 pins in the control board (self test) and the panel displays perfectly all solid colors and patterns as it should.

    My questions are:

    1. Does this means that the Y, Z and x boards and buffers works properly?
    2. Could be the control board itself faulty, even it runs the self test correctly ?

    The control board Led lites every 5 secs (long -short-5 secs-long short)

    All voltages are correct (VS, VA, VSC, VE) except 15V which reads 17.5V

    Any help will be very appreciated !

    Thank you in advance !

    Anibal
    Tags: None
    • tvtimmy
      Badcaps Legend
      • Mar 2015
      • 1160
      • usa
      #2
      Re: Plasma lg 60pn5700 -- self test ok -- but no picture -- help please !

      Everything but the mainboard is good. Someone sold you a bad mainboard. That test confirms the control board is good and main is bad. Get your $$$$$ back and try another.

        Comment

        • anibal2100
          Anibal
          • Apr 2011
          • 31
          • USA
          #3
          Re: Plasma lg 60pn5700 -- self test ok -- but no picture -- help please !

          Thank you for the advice !
          Just what I suspected but I need a more experienced opinion because is hard to accept that a mainboard claimed as "working perfect" doesn't work at all. Is a headache !!
          Thanks to you my headache is gone ! hahahaha!
          I just ordered another main (actually $20 cheaper than the previous)
          Thank you again and I will post the results next week to let you know and for the benefit of others with the same problem.
          Best regards !

          Anibal

            Comment

            • anibal2100
              Anibal
              • Apr 2011
              • 31
              • USA
              #4
              Re: Plasma lg 60pn5700 -- self test ok -- but no picture -- help please !

              Ok. Here is the update.
              Got the second mainboard today and.. works just fine !
              So thank you TvTimmy !!!

                Comment

                • tvtimmy
                  Badcaps Legend
                  • Mar 2015
                  • 1160
                  • usa
                  #5
                  Re: Plasma lg 60pn5700 -- self test ok -- but no picture -- help please !

                  U.R. WELCOME! Thanks for the update, enjoy!

                    Comment

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