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    #1

    rca l40fhd380yx7

    I have a vertical line that spans the left side of the display, about the size of a thread. On both sides of this line the picture is clear, but has a lighter contrast on the left compared to the right. All caps check good on the board using vom
    Any thoughts? See attached impeg.
    Attached Files
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    #2
    Re: rca l40fhd380yx7

    Panel

    Comment

      #3
      Re: rca l40fhd380yx7

      The panel itself? Whats the reason

      Comment

        #4
        Re: rca l40fhd380yx7

        Originally posted by showmemule View Post
        The panel itself? Whats the reason
        A bad driver or a bad bond between the flex circuit and the glass panel; more likely the former. In either case it is considered unrepairable.

        PlainBill
        For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.

        Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.

        Comment

          #5
          Re: rca l40fhd380yx7

          What is a flex circuit, and is there a hidden menu for this unit I can play with to adjust for driver probs?

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            #6
            Re: rca l40fhd380yx7

            No, this failure is purely a mechanical failure and cannot be fixed through any menu. The flex circuit is the ribbon that connects to the glass panel itself. Once an lcd panel develops a problem like this there is no repair.

            Comment

              #7
              Re: rca l40fhd380yx7

              Originally posted by showmemule View Post
              What is a flex circuit, and is there a hidden menu for this unit I can play with to adjust for driver probs?
              The heart of an LCD display is a glass panel with LCD cells etched into it. The flex circuit connects the tcon board to the glass panel, and has driver ICs bonded to it.

              No adjustment is possible, and as far as I know, no repair is possible.

              PlainBill
              For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.

              Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.

              Comment

                #8
                Re: rca l40fhd380yx7

                Thanks Plainbill,
                Did not know of the ribbon connections referred to as a flex circuit. So the tconn is not a possible fix, because the picture is great other than that.

                Thanks again!

                Comment

                  #9
                  Re: rca l40fhd380yx7

                  No it is a panel failure.

                  Comment

                    #10
                    Re: rca l40fhd380yx7

                    would this be the same if it was on both sides of the screen? or could that be a main board issue?

                    ive got a lcd with sort of the same but its not as bad as that picture you cant really notice it that much, but its there

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