Sharp LC-52LE640U Bad Panel?

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  • Baldrick
    Member
    • Apr 2014
    • 19
    • USA
    #1

    Sharp LC-52LE640U Bad Panel?

    I've got a Sharp LC-52LE640U that flashes 5 fast/2 slow. I've finally gotten half of the screen to work perfectly.

    When I disconnected the two ribbon cables from the t-con board to the panel, the blinking stopped. I then plugged one cable back in and I got half the screen working great, but the other half is white. When I plug the other one in, it dies and I get the error again.

    Is this definitely a bad LCD panel? Is it worth even thinking about repairing it?

    Thanks.
    Tags: None
    • nuala
      Member
      • Aug 2013
      • 37
      • USA
      #2
      Re: Sharp LC-52LE640U Bad Panel?

      12v panel fail is usually either no 12v to tcon or a blown tcon fuse, the voltages look good.

        Comment

        • splitcrete
          Badcaps Veteran
          • Dec 2012
          • 387
          • usa
          #3
          Re: Sharp LC-52LE640U Bad Panel?

          Try flexing the panel to see if it gets better,or use a hair dryer blown to the t-con ribbon cables. I sounds like a tab bond problem..

            Comment

            • tibimakai
              Badcaps Legend
              • Jan 2012
              • 3680
              • USA
              #4
              Re: Sharp LC-52LE640U Bad Panel?

              I would look at the tabs, to see if there is any damage there(not tab bonding).
              I have a Sony, which had the same symptom and I have found blown tab and panel board in the same spot where they touched each other.

                Comment

                • tom66
                  EVs Rule
                  • Apr 2011
                  • 32560
                  • UK
                  #5
                  Re: Sharp LC-52LE640U Bad Panel?

                  If 15V to one of the panel sides is shorted, it could cause a 5-2 code. Bad panel... Maybe worth checking for shorted MLCC on panel which might be fixable.
                  Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                  For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                    Comment

                    • Baldrick
                      Member
                      • Apr 2014
                      • 19
                      • USA
                      #6
                      Re: Sharp LC-52LE640U Bad Panel?

                      Well, something's changed... Now, I no longer have the 5/2 blinks. With the one ribbon cable plugged in, I have the left half of the screen working great. When I plug the second cable in, I get an image on both sides, but the whole screen is faint, flickering, and blotchy.

                      I noticed too, the when the second cable is plugged in, I get a slight buzz from the tcon board.

                      tom66, would the MLCC you mention be on the driver board?

                      Thanks.

                        Comment

                        • tom66
                          EVs Rule
                          • Apr 2011
                          • 32560
                          • UK
                          #7
                          Re: Sharp LC-52LE640U Bad Panel?

                          If by driver you mean the long PCB which extends along the top of the panel, yes.
                          Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                          For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                            Comment

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