Sharp AQUOS 70" LCD model LC-70LE550U

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  • freakaftr8
    Badcaps Legend
    • Oct 2012
    • 3743
    • USA

    #41
    Re: Sharp AQUOS 70" LCD model LC-70LE550U

    Peel both away so that flex cable is free from both the panel and the board.
    Did I leave the soldering iron on?

    Comment

    • budwich
      Badcaps Legend
      • Jul 2015
      • 3097
      • Canada

      #42
      Re: Sharp AQUOS 70" LCD model LC-70LE550U

      Originally posted by freakaftr8
      That's your problem. Unfortunately you have got no other choice but to remove that board with those IC's on them.

      Just an interesting thought that I have not tried with anybody else's TV nor myself yet. Why don't you try removing just that IC off of the screen and the board leaving the other IC's still attached to the board and the screen. Then plug in the white cable to that side board again and see if you have a good picture. Trying to see what would happen with just one remove instead of all 5 on the side. Regardless that IC must be removed anyway
      Hey Freakaftr8...
      Have you ever looked at the underside of the driver "chip" on the tab cable?
      Is it just a "simple" pad connection going in and going out or are there several pads / connections... is it possible that maybe just scraping off the chip will solve the issue without pulling the flex cables from the panel?

      Comment

      • freakaftr8
        Badcaps Legend
        • Oct 2012
        • 3743
        • USA

        #43
        Re: Sharp AQUOS 70" LCD model LC-70LE550U

        No. I thought that early and my TV repair life its have cables get warped by the driver IC overheatin. plus the IC's are fused to the ribbons the process of hot bonding and has to be performed with a very expensive machine that is not available to us. You would have to replace the ribbons with the IC'S already embedded into them.

        Youtube search for tab bonding repair then you'll see the machine used. It's a pretty elaborate process
        Did I leave the soldering iron on?

        Comment

        • budwich
          Badcaps Legend
          • Jul 2015
          • 3097
          • Canada

          #44
          Re: Sharp AQUOS 70" LCD model LC-70LE550U

          I don't mean repair, I mean just removing the chip itself if that's the point of failure and leave the rest alone. Yes, this won't return the set to "new" but it may stop having to mess with 4-5 cables at the panel side which if someone is "unlucky" could mean "death" to the panel.

          Comment

          • freakaftr8
            Badcaps Legend
            • Oct 2012
            • 3743
            • USA

            #45
            Re: Sharp AQUOS 70" LCD model LC-70LE550U

            This is true but trying to pop that chip out of that ribbon cable is more of a challenge usually ends up destroying the cable and causing other faults
            Did I leave the soldering iron on?

            Comment

            • ReeceyBurger123
              Never Give Up !
              • May 2014
              • 7325
              • Britain

              #46
              Re: Sharp AQUOS 70" LCD model LC-70LE550U

              Originally posted by freakaftr8
              No. I thought that early and my TV repair life its have cables get warped by the driver IC overheatin. plus the IC's are fused to the ribbons the process of hot bonding and has to be performed with a very expensive machine that is not available to us. You would have to replace the ribbons with the IC'S already embedded into them.

              Youtube search for tab bonding repair then you'll see the machine used. It's a pretty elaborate process
              You can do it with a solder iron will link to the video later.
              Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !

              https://www.facebook.com/Telford-Tel...7894576335359/

              Comment

              • budwich
                Badcaps Legend
                • Jul 2015
                • 3097
                • Canada

                #47
                Re: Sharp AQUOS 70" LCD model LC-70LE550U

                Originally posted by freakaftr8
                This is true but trying to pop that chip out of that ribbon cable is more of a challenge usually ends up destroying the cable and causing other faults
                I don't have access to the boards that I removed, maybe you still have yours kicking around... may the "soldering iron" test on one of those "dead guys" might be an interesting thing... of course if you have nothing else to do... :-)

                Comment

                • Olympus620
                  Member
                  • Nov 2015
                  • 21
                  • USA

                  #48
                  Re: Sharp AQUOS 70" LCD model LC-70LE550U

                  Ok I threw caution to the wind and removed the 2 boards. The first image is with the bottom only ribbon cable removed as we were discussing. The upper part of the screen remained distorted.
                  Second picture is with the second ribbon cable removed.

                  At that point I could see a pattern and just removed the remaining ribbon cables and these two images are the end result.





                  I think we have a winner folks. Thanks for all your help Bud and freak

                  I am curious because the ribbon cables seemed not to be complicated. If the ribbon cables could be sourced with the drivers installed, with low temperature solder they may not be that difficult to replace. A steady hand(s) would be a must.
                  Last edited by Olympus620; 11-15-2015, 03:00 PM.

                  Comment

                  • budwich
                    Badcaps Legend
                    • Jul 2015
                    • 3097
                    • Canada

                    #49
                    Re: Sharp AQUOS 70" LCD model LC-70LE550U

                    congrats

                    Comment

                    • freakaftr8
                      Badcaps Legend
                      • Oct 2012
                      • 3743
                      • USA

                      #50
                      Re: Sharp AQUOS 70" LCD model LC-70LE550U

                      Yes congratulations on the repair I had a hunch that the remaining of the screen would still be dark due to the fact that I believe these cables or these ribbons run in series to some extent. Until somebody comes up with a solid solution of being able to successfully replace a ribbon IC and tab bond, this is our only hope to salvage a otherwise deemed useless panel
                      Did I leave the soldering iron on?

                      Comment

                      • budwich
                        Badcaps Legend
                        • Jul 2015
                        • 3097
                        • Canada

                        #51
                        Re: Sharp AQUOS 70" LCD model LC-70LE550U

                        The Sharp's sets look easier to save than others. I have been "broadcasting" the potential for a save on few other forums in an effort to keep more out of e-cycles... but maybe this is cutting down the "opportunities" for non-owners to becomes owners on the cheap... :-)

                        Comment

                        • freakaftr8
                          Badcaps Legend
                          • Oct 2012
                          • 3743
                          • USA

                          #52
                          Re: Sharp AQUOS 70" LCD model LC-70LE550U

                          Lol. Fitting. Found this on my local craigslist.
                          Attached Files
                          Did I leave the soldering iron on?

                          Comment

                          • hmendez86
                            Badcaps Veteran
                            • Jun 2015
                            • 344
                            • united states

                            #53
                            Re: Sharp AQUOS 70" LCD model LC-70LE550U

                            Ey freak8 I have a lc-80le757u it has a line in the middle of tv horizontal but these drivers are with no boards it is like a regular lcd tv there bit small. The line comes from the right side, the line stops like at the middle just above that. It won't get to the left side .it has 4 drivers. I did disconnect the 2 right t-con cables and it dI'd disapeared but it got darker screen. I don't know how these drivers work ????

                            Comment

                            • budwich
                              Badcaps Legend
                              • Jul 2015
                              • 3097
                              • Canada

                              #54
                              Re: Sharp AQUOS 70" LCD model LC-70LE550U

                              post some pictures of each side of the back of the panel. there are tab driver cables somewhere.

                              Comment

                              • hmendez86
                                Badcaps Veteran
                                • Jun 2015
                                • 344
                                • united states

                                #55
                                Re: Sharp AQUOS 70" LCD model LC-70LE550U







                                Attached Files

                                Comment

                                • budwich
                                  Badcaps Legend
                                  • Jul 2015
                                  • 3097
                                  • Canada

                                  #56
                                  Re: Sharp AQUOS 70" LCD model LC-70LE550U

                                  tough to see due to lighting conditions but maybe the second one shows the brown flex cables if I "understand" the picture. you may have to remove the bezel on one side (hopefully the bad side... where the horizontal line originates from) and get a closer look at the panel edge where the cables are attached.

                                  Comment

                                  • hmendez86
                                    Badcaps Veteran
                                    • Jun 2015
                                    • 344
                                    • united states

                                    #57
                                    Re: Sharp AQUOS 70" LCD model LC-70LE550U

                                    Originally posted by budwich
                                    tough to see due to lighting conditions but maybe the second one shows the brown flex cables if I "understand" the picture. you may have to remove the bezel on one side (hopefully the bad side... where the horizontal line originates from) and get a closer look at the panel edge where the cables are attached.
                                    I'll post more pics tomorrow in day ligth. I need to remove the trim were the driver tab goes.

                                    Comment

                                    • hmendez86
                                      Badcaps Veteran
                                      • Jun 2015
                                      • 344
                                      • united states

                                      #58
                                      Re: Sharp AQUOS 70" LCD model LC-70LE550U







                                      Attached Files

                                      Comment

                                      • Curt2128
                                        New Member
                                        • May 2016
                                        • 1
                                        • United States

                                        #59
                                        Re: Sharp AQUOS 70" LCD model LC-70LE550U

                                        Does this same issue apply to the 3 short and 1 long blinks? I have a sharp lc-70tq15u where I believe I have a bad panel. I removed the two ribbons from the T-con board and now I have the backlight on both sides of the screen however the left side of the screen is blank and that has the ribbons removed from Tcon board. whats my best course of action to get this tv to come to life again? I noticed earlier in the thread it says remove the small connector on the Tcon board however I believe the TQ,SQ,UQ are slightly different. Any help would be appreciated.

                                        Comment

                                        • Ice711
                                          New Member
                                          • Mar 2017
                                          • 1
                                          • Us

                                          #60
                                          Re: Sharp AQUOS 70" LCD model LC-70LE550U

                                          Freak your awesome!! I know this thread is 2 years old, but still very helpful! Found the TV on a FB group for free. Got it home followed the directions in the forum, and bammn!! It works like a charm! Thanks again for your knowledge

                                          Comment

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