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Sharp LC-50LB371C LED TV VERTICAL LINES

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    Sharp LC-50LB371C LED TV VERTICAL LINES

    Hello,

    I’m new here and would love to get some help....I have a 5 year old Sharp LED tv with vertical lines.

    So far I have removed and cleaned most of the ribbon cables with no change.....any help with the next testing steps such as voltage checks or? would be highly appreciated.

    Thanks
    Attached Files
    Last edited by TV HELP; 11-15-2020, 02:14 PM. Reason: Pictures

    #2
    Re: Sharp LC-50LB371C LED TV VERTICAL LINES

    Could it be the t-con

    Comment


      #3
      Re: Sharp LC-50LB371C LED TV VERTICAL LINES

      I think it's a bad tab bond, try tapping on the bezel, NOT the screen where the line is, see if the line goes away or changes any.

      Comment


        #4
        Re: Sharp LC-50LB371C LED TV VERTICAL LINES

        Only repeating lines/patterns may be tcon issues. Single random vertical lines or bands are bad panels.

        Comment


          #5
          Re: Sharp LC-50LB371C LED TV VERTICAL LINES

          When I disconnect the 2 ribbon cables that leave the T-Con board and go to the panel the lines go away......not sure if this means anything?
          Last edited by TV HELP; 11-16-2020, 11:01 AM.

          Comment


            #6
            Re: Sharp LC-50LB371C LED TV VERTICAL LINES

            How do I test the T-Con board to confirm it works or not?

            Comment


              #7
              Re: Sharp LC-50LB371C LED TV VERTICAL LINES

              Try wiggle or shake the video input cables, see if that helps.

              Comment


                #8
                Re: Sharp LC-50LB371C LED TV VERTICAL LINES

                if you detach tcon outputs its normal that lines go.away since there is no more signal, locate the tabs where appears bad columns, then put a shim under them, then warm the back of the chip so on the amber side with a sokdering iron

                Comment


                  #9
                  Re: Sharp LC-50LB371C LED TV VERTICAL LINES

                  Originally posted by Davi.p View Post
                  if you detach tcon outputs its normal that lines go.away since there is no more signal, locate the tabs where appears bad columns, then put a shim under them, then warm the back of the chip so on the amber side with a sokdering iron
                  Can you please send a picture of where I do this

                  Comment


                    #10
                    Re: Sharp LC-50LB371C LED TV VERTICAL LINES

                    defenately not, i'm at hospital now..

                    Comment


                      #11
                      Re: Sharp LC-50LB371C LED TV VERTICAL LINES

                      Originally posted by Davi.p View Post
                      defenately not, i'm at hospital now..

                      I hope you are ok!

                      Comment


                        #12
                        Re: Sharp LC-50LB371C LED TV VERTICAL LINES

                        Originally posted by Davi.p View Post
                        defenately not, i'm at hospital now..

                        Are you in Milan Italy? I have been there!

                        Comment


                          #13
                          Re: Sharp LC-50LB371C LED TV VERTICAL LINES

                          yes.. so basically,, if you detach tcon from the large screen boards , then you flip them you see the green part of the tab where there is a chip, ok you must put a shim under it provisional, then you put eveeverything normal and you warm under the chip especially in the zone that makes appear again the missing lines, so this test at tv switched on, i have near reapaired one this way.

                          Comment


                            #14
                            Re: Sharp LC-50LB371C LED TV VERTICAL LINES

                            Any other ideas?

                            Comment


                              #15
                              Re: Sharp LC-50LB371C LED TV VERTICAL LINES

                              Buf why other ideas? I have given you an idea, you have done what?...

                              Comment


                                #16
                                Re: Sharp LC-50LB371C LED TV VERTICAL LINES

                                Originally posted by Davi.p View Post
                                Buf why other ideas? I have given you an idea, you have done what?...
                                I want to try your option I'm just not sure exactly what you want me to do

                                Comment


                                  #17
                                  Re: Sharp LC-50LB371C LED TV VERTICAL LINES

                                  sorry i can't explain it better

                                  Comment


                                    #18
                                    Re: Sharp LC-50LB371C LED TV VERTICAL LINES

                                    Originally posted by Davi.p View Post
                                    sorry i can't explain it better
                                    Thank you very much for your help!

                                    Comment


                                      #19
                                      Re: Sharp LC-50LB371C LED TV VERTICAL LINES

                                      ?????

                                      Comment


                                        #20
                                        Re: Sharp LC-50LB371C LED TV VERTICAL LINES

                                        I took part of the bottom bezel off and discovered a sticky substance on one of the I believe their called tab bonds maybe someone spilled something .....could this be an issue?


                                        I will be cleaning the area up and testing.
                                        Attached Files

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