LG 26LG30-UA Picture Freezing

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  • kevinm34232
    Badcaps Legend
    • May 2012
    • 1884
    • USA
    #1

    LG 26LG30-UA Picture Freezing

    When I first turn the TV on I get a normal pic for about 10 seconds, then starting at the bottom, the pic freezes the bottom 1/3 horizontally, then followed by the 2/3rd, then the top 3rd. It stays frozen for 10-15 mins and then pic comes back and stays normal.

    I played around with a hair dryer and freeze spray and it seemed like the T-Con board was the culprit, so I replaced it but have the same problem.

    Any ideas?
    Attached Files
    Tags: None
    • retiredcaps
      Badcaps Legend
      • Apr 2010
      • 9271
      #2
      Re: LG 26LG30-UA Picture Freezing

      You will have to take the cover off the main board so we can see what it looks like. In addition, your pictures will have to be a lot more clear, focused and brighter for us to help. Focused enough so we can read the pcb designations on the boards. When remote troubleshooting, garbage in means garbage out.
      --- begin sig file ---

      If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.

      We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.

      Please do not post inline and offsite as they slow down the loading of pages.

      --- end sig file ---

        Comment

        • kevinm34232
          Badcaps Legend
          • May 2012
          • 1884
          • USA
          #3
          Re: LG 26LG30-UA Picture Freezing

          OK, I was looking for a general theory on the symptoms first I will get better pics.

            Comment

            • kevinm34232
              Badcaps Legend
              • May 2012
              • 1884
              • USA
              #4
              Re: LG 26LG30-UA Picture Freezing

              Here's a couple pics, so any ideas if not TCon board, could it be the panel itself?
              Attached Files

                Comment

                • kevinm34232
                  Badcaps Legend
                  • May 2012
                  • 1884
                  • USA
                  #5
                  Re: LG 26LG30-UA Picture Freezing

                  (Service Manual)
                  Attached Files

                    Comment

                    • kevinm34232
                      Badcaps Legend
                      • May 2012
                      • 1884
                      • USA
                      #6
                      Re: LG 26LG30-UA Picture Freezing

                      It looks like its freezing on all inputs, which seems (at least to me) to point to main chip BCM3552X. I don't have an oscilloscope to test waveform as SM says.

                        Comment

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