LG 60LA7408 vertical lines

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  • dominik0801
    Senior Member
    • Feb 2018
    • 98
    • Hungary
    #1

    LG 60LA7408 vertical lines

    Hello!

    Next week I would have the opportunity to pick up an LG 60LA7408 TV for $60.

    It produces the symptoms in the attachments.

    What would you say? Does it seem like a "simple" VGL/VGH problem, that could be fixed with jumpering, and bypassing a tab?

    Or does it seem to be more problematic for you?

    I have never fixed something like this before, but I am willing to learn and experiement, but if it looks unfixable for you, I wouldn't buy it for nothing.

    I saw something similiar on youtube: https://www.youtube.com/watch?v=khS6q_wNJZ8
    Attached Files
    Tags: None
    • neilc6
      Badcaps Legend
      • Nov 2015
      • 1550
      • Canada
      #2
      Re: LG 60LA7408 vertical lines

      Vertical lines are almost always panel issues with the TAB bonds, COF on the flexes, or the circuitry on the panel boards. Not repairable.

        Comment

        • Nick's Tvs
          Badcaps Veteran
          • Jan 2014
          • 621
          • USA
          #3
          Re: LG 60LA7408 vertical lines

          Try disconnecting half the screen. Turn your TV off and remove power. Then remove 1 of the ribbons between the T-con and the panel. Then power it on and see what happens. If the connected half now displays properly, then that means there is a fault with the half that was just disconnected and we can trouble shoot from there. If you still get lines on screen, then unplug the set and reconnect the disconnected ribbon. Now repeat with the other ribbon. If the screen shows properly on the connected half then once again the disconnected half is the culprit and we can diagnose from there.
          If however the screen still displays lines then your T-con or main board may be the cause of the problem.
          As neilc6 stated, this is most likely a panel issue, however there is a chance we can still fix it and or do a work around to allow the set to work.

            Comment

            • budm
              Badcaps Legend
              • Feb 2010
              • 40746
              • USA
              #4
              Re: LG 60LA7408 vertical lines

              By any chance that the tab bonding boards are located at the bottom edge of the screen?
              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

                • dominik0801
                  Senior Member
                  • Feb 2018
                  • 98
                  • Hungary
                  #5
                  Re: LG 60LA7408 vertical lines

                  Well, after the answer of neilc6, I decided I'm not going to buy it. So I can't really give any answers.

                  The problem is, that even if I could fix it, the courier company that this online shop page uses, broke 2 of my last TV orders, which completely ruined my mood about buying TVs for the next few weeks..

                    Comment

                    • ajshoe
                      ajshoe
                      • Dec 2012
                      • 477
                      • usa
                      #6
                      Re: LG 60LA7408 vertical lines

                      I would only PLAY with this tv if it was free. Most likely a experiment tab bond issue !

                        Comment

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