Bad panel or tcon TC-L55E50 LC550EUD

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  • Solderjerk
    Member
    • Aug 2017
    • 16
    • United States
    #1

    Bad panel or tcon TC-L55E50 LC550EUD

    I'm pretty sure I know answer to this but is it a bad panel or tcon?
    I'm so pissed off cuz i finished this tv finally and now I'm sure the panel is trashed
    Short story in case it helps anyone out. Tv is a Panasonic TC-L55E50. Problem was it would blink the picture a couple times and the nothing, the power light would flash every 4 or 5 secs. Panasonics usually do this with a backlight problem. Took it apart, the panel was LG LC550EUD. Troubleshot any found 4 bad leds out of the 120. Replaced both strips and put back together. Tv fires up and works fine except for that big gray stain
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    • budm
      Badcaps Legend
      • Feb 2010
      • 40746
      • USA
      #2
      Re: Bad panel or tcon TC-L55E50 LC550EUD

      That screen is CRACKED!
      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

        • Solderjerk
          Member
          • Aug 2017
          • 16
          • United States
          #3
          Re: Bad panel or tcon TC-L55E50 LC550EUD

          I figured that but I can’t see anything in it...and I was super careful dissecting it. I’m so pissed

            Comment

            • Solderjerk
              Member
              • Aug 2017
              • 16
              • United States
              #4
              Re: Bad panel or tcon TC-L55E50 LC550EUD

              Just wanted to follow up in case it helps anyone...
              I took lcd out and yes there is a crack and it follows those dead spots to a T. The crack was not visible from the front but very easy from the back.
              And a note to everyone, these screens are very brittle, more so than normal. Use caution... I can barely bend it and it cracks

                Comment

                • Andrew F. Ali
                  Badcaps Legend
                  • Jan 2014
                  • 2450
                  • Trinidad & Tobago
                  #5
                  Re: Bad panel or tcon TC-L55E50 LC550EUD

                  You are not supposed to bend the screen. It will break And thanks for the bulletin that these screens are very brittle.

                    Comment

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