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    Lg 60PZ550 no picture

    Hello I acquired a lg 60PZ550 no picture, but the backlight powers on , just no image, I read this can be the mainboard?

    #2
    Re: Lg 60PZ550 no picture

    could be a number of things, do you have a multimeter for testing?

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      #3
      Re: Lg 60PZ550 no picture

      need pictures too, straight on clear pictures of each board and one of the whole back as to see how everything is connected.

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        #4
        Re: Lg 60PZ550 no picture

        or you can do some guessing, my first guess would be maybe a tcon issue but it's just a guess without testing.

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          #5
          Re: Lg 60PZ550 no picture

          Originally posted by nomoresonys View Post
          or you can do some guessing, my first guess would be maybe a tcon issue but it's just a guess without testing.
          Mainboard maybe as a plasma no tcon?
          I would run the test patterns if you can
          service manual https://www.manualslib.com/manual/12...g-60pz550.html

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            #6
            Re: Lg 60PZ550 no picture

            Do the auto_gen test by removing the LVDS cable and shorting two pads on the logic board, the tv should start by showing test patterns, if the image is good and stable the fault lies on the main board, possibly BGA issues on the main chip under the heatsink, famous on all PX and PZ plasmas.

            Following the standard on LG plasmas, I think it's those two pads since the service manual nor the board itself shows where they should be.
            Attached Files

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              #7
              Re: Lg 60PZ550 no picture

              yep, my bad, didn't register the P for plasma.

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