LG 55LM9600 Dark Band Artifacting

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  • badcapspirate
    New Member
    • Nov 2021
    • 3
    • United States
    #1

    LG 55LM9600 Dark Band Artifacting

    I love this TV. I have had it for about five years and about a year ago the audio went out and I reflowed the motherboard with success. I just went on vacation and came back to the following. Because I have nothing to lose I have already tried to reflow the motherboard and the tcon with no success. Parts are available and I'm open to ordering them just not sure what the issue really is. The band has a very distinct cut off on the bottom but a gentle fade to the left. There is artifacting that appears underneath the band. It's possible to watch a show but the colors are a little bit off on the top and the artifacting makes it hard because it probably takes five or so seconds for images to disappear completely.
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    • krsta
      Member
      • Nov 2020
      • 33
      • Croatia
      #2
      Re: LG 55LM9600 Dark Band Artifacting

      Black horizontal thick line can be missing VGH voltage on COF(chip on film).
      Dismantle screen find cof, read what cof it is. Use attachment to find pin location.
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        • Davi.p
          Hobbist Tech
          • Sep 2009
          • 4336
          • Italy - Milan
          #3
          Re: LG 55LM9600 Dark Band Artifacting

          if side tabs are present press a little them and watch image..

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            • badcapspirate
              New Member
              • Nov 2021
              • 3
              • United States
              #4
              Re: LG 55LM9600 Dark Band Artifacting

              Originally posted by Davi.p
              if side tabs are present press a little them and watch image..
              The frame on these are pretty tough but I did my best to push on all the ribbons to no luck. I did verify that the backlight LEDs are all working though.
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                • Davi.p
                  Hobbist Tech
                  • Sep 2009
                  • 4336
                  • Italy - Milan
                  #5
                  Re: LG 55LM9600 Dark Band Artifacting

                  Sorry i don't understand, have you removed the frame? And pushed onto the vertical side tabs?

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