LG 47LB5D No Pic, has audio & backlight

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  • Audioplus
    Senior Member
    • Feb 2012
    • 157
    • USA
    #1

    LG 47LB5D No Pic, has audio & backlight

    Replaced power supply, same issue, replaced main board and on bench it displayed, menu, various inputs. Placed cover back on and reverted back to original no picture scenario, has backlight and audio. I replaced t-con board, did not help.
    I understand that these have ribbon cable issue at times, however I don't think this is the problem.
    Any suggestions? Thank you!
    Tags: None
    • mmartell
      Badcaps Legend
      • Oct 2013
      • 3189
      • Canada
      #2
      Re: LG 47LB5D No Pic, has audio & backlight

      You've replaced everything but the inverter and you say you have backlight so you've received a faulty board, either main or tcon. When not working do you have a black screen or white screen or other ?

      I had one of these and removing the dimming cable from tcon to inverter helped but doesn't sound like the same issue.

        Comment

        • Audioplus
          Senior Member
          • Feb 2012
          • 157
          • USA
          #3
          Re: LG 47LB5D No Pic, has audio & backlight

          Can something create a short to the main board? The reason I ask, when I replaced it and it worked temporarily, what may be placing excess strain on it?

            Comment

            • Audioplus
              Senior Member
              • Feb 2012
              • 157
              • USA
              #4
              Re: LG 47LB5D No Pic, has audio & backlight

              Another associate commented that the ribbon cable to the power invertor for the panel creates issue sometimes, may be a little pressure and some hot glue resolves?
              Any comments?

                Comment

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