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    THOMSON / TCL 43UC6406 jumping image

    Hello everyone
    I got a Thomson (TCL rebrand) 43UC6406 television with a jumping image problem.
    I have replaced the t-con board, but the problem continues ...

    I have make a video :https://youtu.be/v1Y_QfifP-E

    The motherboard nor his components are damaged

    I don't know what search next ? Can it be the LCD ? How can I check this ?

    Thanks for helping me save this !
    Attached Files

    #2
    Re: THOMSON / TCL 43UC6406 jumping image

    disconnect one ribbon cable at time ( the cable between t-con and panel) then turn on check if you have clear half screen..

    Comment


      #3
      Re: THOMSON / TCL 43UC6406 jumping image

      No I haven't clear half screen. See attached pictures.
      Attached Files

      Comment


        #4
        Re: THOMSON / TCL 43UC6406 jumping image

        bad panel.

        Comment


          #5
          Re: THOMSON / TCL 43UC6406 jumping image

          Originally posted by Diah View Post
          bad panel.

          Comment


            #6
            Re: THOMSON / TCL 43UC6406 jumping image

            Originally posted by worlor View Post
            take out the speaker and the metal plate to have access to the panel edge boards... take look there if you are lucky you could find visible issue

            Comment


              #7
              Re: THOMSON / TCL 43UC6406 jumping image

              No visible issue ...
              Attached Files

              Comment


                #8
                Re: THOMSON / TCL 43UC6406 jumping image

                Originally posted by worlor View Post
                No visible issue ...
                take out the both ribbon cable out and inspect them under loop if there any damage at the pins contact.. after inspection and they are fine put them back but the long blue area should be at T-CON side.. not as its now.

                also inspect the LVDS cable from the mainboards side.. dont forget to take the main boards out side the set and clean it very well from the dust it have from both side.

                Comment


                  #9
                  Re: THOMSON / TCL 43UC6406 jumping image

                  Originally posted by Diah View Post
                  take out the both ribbon cable out and inspect them under loop if there any damage at the pins contact.. after inspection and they are fine put them back but the long blue area should be at T-CON side.. not as its now.

                  also inspect the LVDS cable from the mainboards side.. dont forget to take the main boards out side the set and clean it very well from the dust it have from both side.
                  I cleaned everything and the ribbons cable are OK.
                  When I connect only right side of the screen, I got a half-screen white and the other black, on the white side there is black line and the "jumping" effect is present on the right side. When I connect only the left side of the screen, just a half white screen. I have tried swaping the two ribbon cable -> same result.
                  No changes when I move gently the board when screen on.

                  Also, the t-con get very hot.
                  Attached Files
                  Last edited by worlor; 01-20-2021, 12:17 PM.

                  Comment


                    #10
                    Re: THOMSON / TCL 43UC6406 jumping image

                    Originally posted by worlor View Post
                    I cleaned everything and the ribbons cable are OK.
                    When I connect only right side of the screen, I got a half-screen white and the other black, on the white side there is black line and the "jumping" effect is present on the right side. When I connect only the left side of the screen, just a half white screen. I have tried swaping the two ribbon cable -> same result.
                    No changes when I move gently the board when screen on.

                    Also, the t-con get very hot.
                    yours photos on post #3 when you disconnect one side ribbon are different from yours last photos after you inspect the cable !!!!!! ????
                    how it come?? are you sure the ribbon are fine???

                    Comment


                      #11
                      Re: THOMSON / TCL 43UC6406 jumping image

                      Originally posted by Diah View Post
                      yours photos on post #3 when you disconnect one side ribbon are different from yours last photos after you inspect the cable !!!!!! ????
                      how it come?? are you sure the ribbon are fine???

                      On post #3 there was a boot logo when I boot up the TV with the 2 ribbon cable. Now the screen is completely black. I don't know why.
                      The boot up process work because the leds lights up then down

                      Comment


                        #12
                        Re: THOMSON / TCL 43UC6406 jumping image

                        Originally posted by worlor View Post
                        On post #3 there was a boot logo when I boot up the TV with the 2 ribbon cable. Now the screen is completely black. I don't know why.
                        The boot up process work because the leds lights up then down
                        so the actual T-CON toasted !!!

                        Comment


                          #13
                          Re: THOMSON / TCL 43UC6406 jumping image

                          I have tried with the other one and black screen too :/

                          Comment


                            #14
                            Re: THOMSON / TCL 43UC6406 jumping image

                            Originally posted by worlor View Post
                            I have tried with the other one and black screen too :/
                            you removed the main boards to cleaning the dust as i asked you... right ??? then you need to check if you did missed some things at MB

                            Comment


                              #15
                              Re: THOMSON / TCL 43UC6406 jumping image

                              I saw a video online where some indian dude was messing with the buffer board on a LG tv with stutter problems ... He seemed to fix it by bypassing some IC.. Cant find the video of it right now but when i do i will post it so you can try.

                              Comment


                                #16
                                Re: THOMSON / TCL 43UC6406 jumping image

                                I fixed same issue with VIZIO TV by putting small piece of tape on the cable connecting to LCD panel from t-con. I don't remember exactly but I placed tape on 3-4 pins and it worked.

                                Comment


                                  #17
                                  Re: THOMSON / TCL 43UC6406 jumping image

                                  Originally posted by anupkg1985 View Post
                                  I fixed same issue with VIZIO TV by putting small piece of tape on the cable connecting to LCD panel from t-con. I don't remember exactly but I placed tape on 3-4 pins and it worked.
                                  +1, Yep, tape-cutoff method, might just work.

                                  Comment


                                    #18
                                    Re: THOMSON / TCL 43UC6406 jumping image

                                    Hello,
                                    Tried to tape pin 3-4 of the ribbon cable, green lines have appeared but the "wobbling" is still present :/

                                    Comment


                                      #19
                                      Re: THOMSON / TCL 43UC6406 jumping image

                                      I'm not sure about the pin numbers and it could be different for TCL than Vizio. First you need to identify which side is the problem left or right bu disconnecting one cable cable at a time from t-con and check half image has that "wobbling" issue or not. Then you need to take brute force action to fixe the issue. As I said there is no specific number of pin that you need to block.

                                      Comment


                                        #20
                                        Re: THOMSON / TCL 43UC6406 jumping image

                                        Originally posted by worlor View Post
                                        Hello,
                                        Tried to tape pin 3-4 of the ribbon cable, green lines have appeared but the "wobbling" is still present :/
                                        try the method on 1 or 2 or 3 or 4 pins on the side in photo
                                        Attached Files

                                        Comment

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