Samsung 60" LED with corrosion on panel-connected board

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  • curt2199
    Senior Member
    • Oct 2013
    • 54
    • United States
    #1

    Samsung 60" LED with corrosion on panel-connected board

    I picked up this TV pretty cheap hoping to do a simple TCON board replacement (tv powers on and I get backlight). I swapped in a good TCON board and still no picture but I was getting some different symptoms. Anyway, I dug deeper and removed the bezel on the TV and found corrosion on a board near the panel. It appears it's gotten some moisture to it. I'm going to clean it up but most likely it has some bad components and may be beyond repair. Am I to assume that this board only comes with panels and therefore this repair is a loss?
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    • philtvman
      Senior Member
      • Jun 2016
      • 94
      • America
      #2
      Re: Samsung 60" LED with corrosion on panel-connected board

      Yes you are correct, those are applied in the factory with a special adhesive that only conducts in one direction. They put a coating across the contacts then line them up perfectly using a microscope and heat to set.

      I've come across a few with similar corrosion on those ribbons (usually kids throwing their drinks at the screen). Ended up using some Blue Works Contact Cleaner and a soft toothbrush to get it off, worked about 50% of the time.

        Comment

        • budm
          Badcaps Legend
          • Feb 2010
          • 40746
          • USA
          #3
          Re: Samsung 60" LED with corrosion on panel-connected board

          Another one of those LCD panel with tab bonding board on the bottom edge and it gets corrosion due to owner spray cleaner on the screen so it drips down on to the board and causes problem.
          You can try cleaning it and check the resistance of those SMD caps and see if the traces got eaten away or not.
          Last edited by budm; 03-23-2017, 09:53 AM.
          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

            • curt2199
              Senior Member
              • Oct 2013
              • 54
              • United States
              #4
              Re: Samsung 60" LED with corrosion on panel-connected board

              Ok, I cleaned it up with a fiberglass brush and alcohol. Cleaned all the contacts. With the new board in place before cleaning I was hearing some noise from the TCON like it was trying to work the panel but the backlights wouldn't come on unless I unhooked the TCON from the Main board. After cleaning it up, the backlights is coming on but still no picture so I'm assuming I made some progress with it but the traces must be shot.

                Comment

                • capwizard
                  Badcaps Legend
                  • Jun 2016
                  • 1991
                  • USA
                  #5
                  Re: Samsung 60" LED with corrosion on panel-connected board

                  I gonna repair one TV with water-damage like yours. I will update.

                  https://www.badcaps.net/forum/showthread.php?t=60811
                  Last edited by capwizard; 03-23-2017, 10:08 AM.

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