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    #1

    Interesting home-built TAB bonding machine

    https://www.youtube.com/watch?v=QtY1QH120-I

    Looks like i haven't been the only Romanian with this idea. I find it pretty amazing how the tab is completely removed and then bonded back on, and the TV works afterwards! I wasn't thinking of actually removing the TAB connection, but rather just re-applying pressure and heat to "reflow" it in a way. But it seems that the actual replacement of TAB drivers is possible.
    Originally posted by PeteS in CA
    Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
    A working TV? How boring!
    Tags: None
    #2
    Re: Interesting home-built TAB bonding machine

    Too bad the person doesn't explain or comment on what he is doing??
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      #3
      Re: Interesting home-built TAB bonding machine

      Well it's kinda self-explanatory. I have been studying the TAB bonding process lately and gathering as much information as i could. They are basically pressure bonded. Apply a set amount of pressure, apply heat, done.

      I believe the equipment to rework this is like BGA reworking equipment - large, automated professional machines are extremely expensive, but much cheaper options are available if you don't need to do a lot of them quickly. I think i can build something like shown in the video.
      Originally posted by PeteS in CA
      Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
      A working TV? How boring!

      Comment

        #4
        Re: Interesting home-built TAB bonding machine

        Originally posted by Th3_uN1Qu3 View Post
        Well it's kinda self-explanatory.
        Really??

        It may be obvious to you since you are studying it and yes I know what he is obviously trying to fix, but he doesn't tell you anything about the procedures, the materials used, the process, the time it takes, success rate, cost, tools, why this is better than another method, longevity, etc.
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        Comment

          #5
          Re: Interesting home-built TAB bonding machine

          apparently he cleaned the surface with alcohol, the pressure heat combination, O.k. Question is how much pressure and heat? What kind of glue did he use?

          Comment

            #6
            Re: Interesting home-built TAB bonding machine

            This could be big for us if we can replicate it. I just started taking in TV's this year and already have two with a tab bonding issue.

            I have a Sony 52 inch that I'm willing to use as a guinea pig.

            Comment

              #7
              Re: Interesting home-built TAB bonding machine

              How is the alignment managed?
              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.

              Comment

                #8
                Re: Interesting home-built TAB bonding machine

                Originally posted by tom66 View Post
                How is the alignment managed?
                didnt he use a usb type microscope which the image was shown on the tv he was watching?,i liked that idea
                fixed so far...376 lg lcd tv's,24 onn tv;s,24 panasonic lcd,16 jvc lcd,12 marshall jcm800 amps,refurb of various disco equipment lighting,old style disco decks ,and a flymo!

                ----------------------------------------------
                please let us know if everything works ok if your tv gets fixed, as it will be and aid for anyone else having the same problem and wishing to fix it.it would save people clogging up this site with topics that are duplicated,and can be found easily using the search function.,and taking up valuable space.enjoy your fixed tv!,hopefully!

                Comment

                  #9
                  Re: Interesting home-built TAB bonding machine

                  can't see thru his hand

                  Comment

                    #10
                    Re: Interesting home-built TAB bonding machine

                    Yes he is using usb type microscope for alignment.
                    HAs a decent working distance too on the microscope too...
                    He has his email in the video anyone contacted him. ?

                    Comment

                      #11
                      Re: Interesting home-built TAB bonding machine

                      I emailed him today and will keep you gents updated.

                      Comment

                        #12
                        Re: Interesting home-built TAB bonding machine

                        Here you can see the temperatures and times:
                        https://www.youtube.com/watch?v=_D9UCaXBhN4
                        220-227 C and 15 sec.
                        They use ASF tape.

                        Comment

                          #13
                          Re: Interesting home-built TAB bonding machine

                          https://www.youtube.com/watch?v=OCiTKtRBtlk

                          Comment

                            #14
                            Re: Interesting home-built TAB bonding machine

                            http://www.avsforum.com/forum/166-lc...ab-repair.html

                            From where can we purchase new tabs?
                            I have one that has a hole in it. I need to replace it.

                            Comment

                              #15
                              Re: Interesting home-built TAB bonding machine

                              Too bad his hand is in the way to see what is going on.
                              Last edited by budm; 01-09-2015, 03:47 PM.
                              Never stop learning
                              Basic LCD TV and Monitor troubleshooting guides.
                              http://www.badcaps.net/forum/showthr...956#post305956

                              Voltage Regulator (LDO) testing:
                              http://www.badcaps.net/forum/showthr...999#post300999

                              Inverter testing using old CFL:
                              http://www.badcaps.net/forum/showthr...er+testing+cfl

                              Tear down pictures : Hit the ">" Show Albums and stories" on the left side
                              http://s807.photobucket.com/user/budm/library/

                              TV Factory reset codes listing:
                              http://www.badcaps.net/forum/showthread.php?t=24809

                              Comment

                                #16
                                Re: Interesting home-built TAB bonding machine

                                I've tried just reheating them, it doesn't work. The anisotropic tape is one time use. Only thing that's stopped me from attempting any replacement with new tape is the cost of the tape, and the fact that it has a short shelf life. I believe it also must be kept refrigerated.
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                                Comment

                                  #17
                                  Re: Interesting home-built TAB bonding machine

                                  I think when his hand was in the way, he was cleaning and prepping the surface. Now if someone can create a method for repairing scratches, that would make me happy.
                                  ------------signature starts here------------


                                  Comment

                                    #18
                                    Re: Interesting home-built TAB bonding machine

                                    I found this to be quite informative.
                                    https://www.youtube.com/watch?v=biHFJFHpqdM
                                    ------------signature starts here------------


                                    Comment

                                      #19
                                      Re: Interesting home-built TAB bonding machine

                                      Very interesting indeed, but to re-do the tab bonding then I wonder what you have to use to remove the old epoxy adhesive first.
                                      Last edited by budm; 01-09-2015, 08:35 PM.
                                      Never stop learning
                                      Basic LCD TV and Monitor troubleshooting guides.
                                      http://www.badcaps.net/forum/showthr...956#post305956

                                      Voltage Regulator (LDO) testing:
                                      http://www.badcaps.net/forum/showthr...999#post300999

                                      Inverter testing using old CFL:
                                      http://www.badcaps.net/forum/showthr...er+testing+cfl

                                      Tear down pictures : Hit the ">" Show Albums and stories" on the left side
                                      http://s807.photobucket.com/user/budm/library/

                                      TV Factory reset codes listing:
                                      http://www.badcaps.net/forum/showthread.php?t=24809

                                      Comment

                                        #20
                                        Re: Interesting home-built TAB bonding machine

                                        I'll see what I can find on that. As for tabs, I've heard of reusing ones from cracked LCDs.
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                                        Comment

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