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Samsung 40" lcd vertical blue line

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    #1

    Samsung 40" lcd vertical blue line

    Hello, I have picked up a Samsung LE40A456C2DXXU which has sometimes a blue line on the right hand side of the set (photo) it comes and goes and sometimes it fills with green like with speaker interference? The sound is ok on the tv if any thing it may be a little on the low side. I have disconnected the T-con and re seated the ribbon cables and it is still there.

    Any help would be great, thanks.


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    #2
    Re: Samsung 40" lcd vertical blue line

    Is this line only one pixel width in thickness? If so suspect tab bonding issues from the panel being the issue itself. Bad tab bonding or bad tape carrier.
    Did I leave the soldering iron on?

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      #3
      Re: Samsung 40" lcd vertical blue line

      Would tab bonds still show the picture?
      Do NOT touch heatsinks when testing for voltages as they may be LIVE!

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        #4
        Re: Samsung 40" lcd vertical blue line

        Originally posted by freakaftr8 View Post
        Is this line only one pixel width in thickness? If so suspect tab bonding issues from the panel being the issue itself. Bad tab bonding or bad tape carrier.
        the photo shows the with of the blue line, it is not always blue but shows up as green infill which looks to be insync with the sound!

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          #5
          Re: Samsung 40" lcd vertical blue line

          I would think tab bond or t-con failure, more likely to be the former.
          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.

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            #6
            Re: Samsung 40" lcd vertical blue line

            Originally posted by caspermccormack View Post
            the photo shows the with of the blue line, it is not always blue but shows up as green infill which looks to be insync with the sound!
            You need to get some pics up of all the boards, nice and clear.

            I cant tell much about the pics, so just getting some prep work for the other guys.

            Or, no need if its tab bond.

            Try putting a little pressure above and down the side where the blue colour is.
            Do NOT touch heatsinks when testing for voltages as they may be LIVE!

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              #7
              Re: Samsung 40" lcd vertical blue line

              Did you try reseating the ribbons that go from the tcon to the panel as well? On the panel side.
              Did I leave the soldering iron on?

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                #8
                Re: Samsung 40" lcd vertical blue line

                just off the phone to the previous owner and it was hit with a wii remote. I will take a look where the ribbons attach to the lcd panel, I take it thats where the tab bonds are?

                thanks lads.

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                  #9
                  Re: Samsung 40" lcd vertical blue line

                  Thanks again, great forum, super community.

                  Looks like it's sorted!!





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