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Black screen LG 43UK6300PLB

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    Black screen LG 43UK6300PLB

    Hi Guys.

    Probably something that have been seen before.

    Out of the blue the screen turned black but can still hear the audio.

    I can see the backlight on so that's something we can exclude.

    Now, i have found a video on youtube of this guy taping x amount of pins on the cable that goes from the mainboard to the screen. Tried that, i can see the screen now but the bottom of it still remains black with a lot of vertical distortions.

    I have been told that the Tcon board needs replacing. I can see that are different opinions on where tcon board is. Some say tcon board is attached to the screen (actually 2 boards, long and narrow) and some say the tcon board is integrated on the mainboard.

    I'm too inexperienced to find where the fault is, i'd love to know if there is a simple fix/replace i can perform to avoid buying a new tele.

    Thanks for you help

    Livio
    Attached Files

    #2
    Re: Black screen LG 43UK6300PLB

    Something i have missed to mention, it does not matter if i disconnect one of the cable that goes to the screen, i am not able to see any of the two halves of the screen working correctly.

    Comment


      #3
      Re: Black screen LG 43UK6300PLB

      could be bad solder balls on the ic under the aliminium heat sink on the main board a lot of lgs suffer from it. If a replacement mainboard was available at a resonable price and came with a gaurantee i would certainly be trying a replacement board.

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        #4
        Re: Black screen LG 43UK6300PLB

        Thanks. I have ordered one for £10 including shipping. hope for the best.

        Another question, what are those 2 boards attached to the screen?
        Attached Files

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          #5
          Re: Black screen LG 43UK6300PLB

          Those are the panel boards that distribute the voltages and data out to the panel. Sometimes they are also incorporate the t-con on the panel boards.
          I assume no responsibility for any stupid suggestions I might post.

          Comment


            #6
            Re: Black screen LG 43UK6300PLB

            I've been seeing more and more LG K series having panel problems, the most common fault is just a black screen, no image at all.

            Like their F, H and J models, all have garbage panels that last 3 years.

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              #7
              Re: Black screen LG 43UK6300PLB

              I bet for a bad cap on the the panel's boards, often almost easy to find, but the fact you can obtain an image with tape method gives me a doubt, can you show us a photo of that bad picture?
              Last edited by Davi.p; 08-15-2022, 04:26 PM.

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                #8
                Re: Black screen LG 43UK6300PLB

                HI. Unfortunately i tried again to do the trick with the tape but does not work anymore.

                I did not purchase anything yet and i'm tempted to put the tv in the skip.

                I'd like to be certain is the mainboard and not the lcd screen.

                Comment


                  #9
                  Re: Black screen LG 43UK6300PLB

                  maybe tear it down and inspect the cofs, lots of times you find one that's obviously burnt.

                  Comment


                    #10
                    Re: Black screen LG 43UK6300PLB

                    Any luck with this one yet? I have the exact same TV with the exact same fault..

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