Samsung 65" UE65TU7000KXXU VER:02/UTU7000 TV Blue screen

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  • lotas
    Badcaps Legend
    • Jan 2016
    • 4589
    • Russia

    #61
    Re: Samsung 65" UE65TU7000KXXU VER:02/UTU7000 TV Blue screen

    Originally posted by Davi.p
    but which code, BN41- or BN94- ?
    Post 28 has it all.
    Attached Files

    Comment

    • gbbradshaw
      Senior Member
      • Feb 2023
      • 55
      • United Kingdom

      #62
      Re: Samsung 65" UE65TU7000KXXU VER:02/UTU7000 TV Blue screen

      Originally posted by Davi.p
      but which code, BN41- or BN94- ?
      Iotas is right. Bn94-15304y

      Comment

      • Davi.p
        Hobbist Tech
        • Sep 2009
        • 4318
        • Italy - Milan

        #63
        Re: Samsung 65" UE65TU7000KXXU VER:02/UTU7000 TV Blue screen

        no, i asked which code he has searched, if the good one or not.. BN94 is the good one..
        my curiosity, has someone done house works , using heavy tools, drills , demolitions and so on the days the defect happened?
        Last edited by Davi.p; 02-24-2023, 07:06 AM.

        Comment

        • gbbradshaw
          Senior Member
          • Feb 2023
          • 55
          • United Kingdom

          #64
          Re: Samsung 65" UE65TU7000KXXU VER:02/UTU7000 TV Blue screen

          Originally posted by Davi.p
          no, i asked which code he has searched, if the good one or not.. BN94 is the good one..
          my curiosity, has someone done house works , using heavy tools, drills , demolitions and so on the days the defect happened?
          Not that I know off. After getting so much information from here, my good guess is that he ( the local tech )has probably tried to fix it by working with the u ribbon cable and eventually totally damaged the main board. That's why my tv went from normal image but with horizontal stall lines to full blue.

          Comment

          • gbbradshaw
            Senior Member
            • Feb 2023
            • 55
            • United Kingdom

            #65
            Re: Samsung 65" UE65TU7000KXXU VER:02/UTU7000 TV Blue screen

            I forgot I had a picture of it before.
            Attached Files

            Comment

            • Davi.p
              Hobbist Tech
              • Sep 2009
              • 4318
              • Italy - Milan

              #66
              Re: Samsung 65" UE65TU7000KXXU VER:02/UTU7000 TV Blue screen

              yes, clearly a panel defect, the same and today old gate driver defect.. only masking tape can work
              you must mask a series of 8 subsequent pins on one of the two flat cables starting from the outer side, at random
              Last edited by Davi.p; 02-24-2023, 10:40 AM.

              Comment

              • gbbradshaw
                Senior Member
                • Feb 2023
                • 55
                • United Kingdom

                #67
                Re: Samsung 65" UE65TU7000KXXU VER:02/UTU7000 TV Blue screen

                Originally posted by Davi.p
                yes, clearly a panel defect, the same and today old gate driver defect.. only masking tape can work
                you must mask a series of 8 subsequent pins on one of the two flat cables starting from the outer side, at random
                I understand. Going from left or right to the middle of each cable. 8 at once. Should I try that before swapping the main board ?

                Comment

                • Davi.p
                  Hobbist Tech
                  • Sep 2009
                  • 4318
                  • Italy - Milan

                  #68
                  Re: Samsung 65" UE65TU7000KXXU VER:02/UTU7000 TV Blue screen

                  the main board is good

                  Comment

                  • gbbradshaw
                    Senior Member
                    • Feb 2023
                    • 55
                    • United Kingdom

                    #69
                    Re: Samsung 65" UE65TU7000KXXU VER:02/UTU7000 TV Blue screen

                    Originally posted by Davi.p
                    yes, clearly a panel defect, the same and today old gate driver defect.. only masking tape can work
                    you must mask a series of 8 subsequent pins on one of the two flat cables starting from the outer side, at random
                    Update: before leaving home, I have managed to swap the main board and now I have the image back! Yeey ! So the main board was damaged. But I still get the lines. If I remove one of the u ribbon I get the following image.
                    I will have to try your method of masking the 8 subsequent pins tomorrow.
                    Picture 1 - without removing the flex ribbon
                    Picture 2 - with the flex ribbon removed
                    Attached Files
                    Last edited by gbbradshaw; 02-24-2023, 03:13 PM.

                    Comment

                    • Davi.p
                      Hobbist Tech
                      • Sep 2009
                      • 4318
                      • Italy - Milan

                      #70
                      Re: Samsung 65" UE65TU7000KXXU VER:02/UTU7000 TV Blue screen

                      the bad side is the right side

                      Comment

                      • gbbradshaw
                        Senior Member
                        • Feb 2023
                        • 55
                        • United Kingdom

                        #71
                        Re: Samsung 65" UE65TU7000KXXU VER:02/UTU7000 TV Blue screen

                        Originally posted by Davi.p
                        the bad side is the right side
                        I am afraid I have only removed the u ribbon from right side as I ran out of time to do so for the left side aswell

                        I will try this tomorrow. So patch 8, then another 8, only from on side of the u ribbon, until it gets fixed? Please look at picture.
                        Attached Files
                        Last edited by gbbradshaw; 02-24-2023, 03:44 PM.

                        Comment

                        • nomoresonys
                          Badcaps Legend
                          • Jan 2013
                          • 12151
                          • U.S.

                          #72
                          Re: Samsung 65" UE65TU7000KXXU VER:02/UTU7000 TV Blue screen

                          Despite what one member says, lines on the screen even lots close together doesn't instantly mean a bad panel, it could be as simple as a bad cap on panel driver boards which technically is a bad panel, or cap on mainboard or cap on powerboard or something else on one of the boards, those who jump to conclusions quickly, NEVER make good troubleshooters AND they are sooo f@#king irritating.
                          Last edited by nomoresonys; 02-24-2023, 05:05 PM.

                          Comment

                          • gbbradshaw
                            Senior Member
                            • Feb 2023
                            • 55
                            • United Kingdom

                            #73
                            Re: Samsung 65" UE65TU7000KXXU VER:02/UTU7000 TV Blue screen

                            Originally posted by nomoresonys
                            Despite what one member says, lines on the screen even lots close together doesn't instantly mean a bad panel, it could be as simple as a bad cap on panel driver boards which technically is a bad panel, or cap on mainboard or cap on powerboard or something else on one of the boards, those who jump to conclusions quickly, NEVER make good troubleshooters.
                            I completely agree with you, but there's nothing else I can do but try things. So far, the only thing that worked was changing the MB, now I got back to having an image. I would also change the caps on the lower boards where the the flex ribbon connects, but honestly I don't see which caps are they or the name, so I can order some.

                            Comment

                            • gbbradshaw
                              Senior Member
                              • Feb 2023
                              • 55
                              • United Kingdom

                              #74
                              Re: Samsung 65" UE65TU7000KXXU VER:02/UTU7000 TV Blue screen

                              Originally posted by gbbradshaw
                              I completely agree with you, but there's nothing else I can do but try things. So far, the only thing that worked was changing the MB, now I got back to having an image. I would also change the caps on the lower boards where the the flex ribbon connects, but honestly I don't see which caps are they or the name, so I can order some.
                              Like the one in the pic
                              Attached Files

                              Comment

                              • Diah
                                Badcaps Legend
                                • Feb 2013
                                • 6363
                                • Germany

                                #75
                                Re: Samsung 65" UE65TU7000KXXU VER:02/UTU7000 TV Blue screen

                                show us clear photo of the left side panel puffer boards when u look on it from back side

                                Comment

                                • nomoresonys
                                  Badcaps Legend
                                  • Jan 2013
                                  • 12151
                                  • U.S.

                                  #76
                                  Re: Samsung 65" UE65TU7000KXXU VER:02/UTU7000 TV Blue screen

                                  No it's not you Gbb, it's that goofy guy that keeps crying panels shorted every time he sees a line or two, which it could be a bad panel but could also be a LOT of other things as well, we all know his name.
                                  Last edited by nomoresonys; 02-24-2023, 05:07 PM.

                                  Comment

                                  • gbbradshaw
                                    Senior Member
                                    • Feb 2023
                                    • 55
                                    • United Kingdom

                                    #77
                                    Re: Samsung 65" UE65TU7000KXXU VER:02/UTU7000 TV Blue screen

                                    Originally posted by Diah
                                    show us clear photo of the left side panel puffer boards when u look on it from back side
                                    First two pics are from the left side of the tv as you look from the back ( right side front)

                                    Last two are from the right side of the back( left side front)

                                    I hope when you said puffer boards, you meant this.
                                    Attached Files
                                    Last edited by gbbradshaw; 02-24-2023, 05:05 PM.

                                    Comment

                                    • Diah
                                      Badcaps Legend
                                      • Feb 2013
                                      • 6363
                                      • Germany

                                      #78
                                      Re: Samsung 65" UE65TU7000KXXU VER:02/UTU7000 TV Blue screen

                                      thx for photos
                                      sorry to say.. your hand very heavy at work.... u keep it so no fix.. or u try while it on. smoothly make pressure on the u ribbon or in the cofs ribbon which goes to lcd from both side.. if u find any better change.. try to fix it by load.

                                      Comment

                                      • gbbradshaw
                                        Senior Member
                                        • Feb 2023
                                        • 55
                                        • United Kingdom

                                        #79
                                        Re: Samsung 65" UE65TU7000KXXU VER:02/UTU7000 TV Blue screen

                                        Originally posted by Diah
                                        thx for photos
                                        sorry to say.. your hand very heavy at work.... u keep it so no fix.. or u try while it on. smoothly make pressure on the u ribbon or in the cofs ribbon which goes to lcd from both side.. if u find any better change.. try to fix it by load.
                                        Sorry but I don't really get what you say in the first two lines. I must be tired

                                        Comment

                                        • Diah
                                          Badcaps Legend
                                          • Feb 2013
                                          • 6363
                                          • Germany

                                          #80
                                          Re: Samsung 65" UE65TU7000KXXU VER:02/UTU7000 TV Blue screen

                                          are you heavy weight person lol..... the place were u worked before on u ribbon... i can see there are signs

                                          if you were slim which i don't think so... then sorry ignore what i wrote. lol

                                          Comment

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