Sony KDL-40BX420 Is this bad tab bond issue?

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  • lesnajair
    Senior Member
    • May 2015
    • 57
    • United Kingdom

    #1

    Sony KDL-40BX420 Is this bad tab bond issue?

    Hi All

    Picked this up cheaply mainly for parts but can anyone confirm the worst? No apparent damage etc on the psu or mainboard...

    Thanks

    Sorry but can't seem to rotate pics!
    Attached Files
    Last edited by lesnajair; 11-19-2015, 04:21 AM. Reason: typo
  • freakaftr8
    Badcaps Legend
    • Oct 2012
    • 3743
    • USA

    #2
    Re: Sony KDL-40BX420 Is this bad tab bond issue?

    Well that's an interesting one the blue shifted upwards kinda like an old CRT projection tv with convergence issues. I'm not sure here but I would suspect tcon board.
    Did I leave the soldering iron on?

    Comment

    • artstv1
      artstv1
      • Sep 2014
      • 10
      • sarasota

      #3
      Re: Sony KDL-40BX420 Is this bad tab bond issue?

      I have one with the pix all blue and some red. But this set has no Tcon board. Could be main but might be panel.

      Comment

      • aaronwt6
        Badcaps Veteran
        • Apr 2013
        • 855
        • US

        #4
        Re: Sony KDL-40BX420 Is this bad tab bond issue?

        Looks like a panel issue to me. It would appear there's a strip at the top (1/4" or so) that looks normal. Is that the case?

        Comment

        • budm
          Badcaps Legend
          • Feb 2010
          • 40746
          • USA

          #5
          Re: Sony KDL-40BX420 Is this bad tab bond issue?

          Originally posted by artstv1
          I have one with the pix all blue and some red. But this set has no Tcon board. Could be main but might be panel.
          T-CON board.
          http://www.shopjimmy.com/catalogsear...ny+KDL-40BX420
          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

          • budm
            Badcaps Legend
            • Feb 2010
            • 40746
            • USA

            #6
            Re: Sony KDL-40BX420 Is this bad tab bond issue?

            Originally posted by lesnajair
            Hi All

            Picked this up cheaply mainly for parts but can anyone confirm the worst? No apparent damage etc on the psu or mainboard...

            Thanks

            Sorry but can't seem to rotate pics!
            So did you try re-seating the cables on the T-CON board? Try flexing the screen to see if the symptom changes.
            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

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