Sharp LC-70LE745U no backligth no image

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • hmendez86
    Badcaps Veteran
    • Jun 2015
    • 344
    • united states

    #21
    Re: Sharp LC-70LE745U no backligth no image

    The main board think is good i tested on another 60inch set and it works fine, so i discarted that the main has a problem it is between the power supply or led problem or wire harness...may be t-con board, but has nothing related with this kind of problem.

    Comment

    • nomoresonys
      Badcaps Legend
      • Jan 2013
      • 12081
      • U.S.

      #22
      Re: Sharp LC-70LE745U no backligth no image

      Try unhook wifi and bluetooth if equiped, then try tv see if any difference, if no then unhook ir board and see if it will work with buttons on tv if it has them.
      Last edited by nomoresonys; 05-03-2020, 08:19 PM.

      Comment

      • nomoresonys
        Badcaps Legend
        • Jan 2013
        • 12081
        • U.S.

        #23
        Re: Sharp LC-70LE745U no backligth no image

        Wonder if it's some kind of software issue, ran across this: https://www.complaintsboard.com/shar...update-c648434

        Comment

        • nomoresonys
          Badcaps Legend
          • Jan 2013
          • 12081
          • U.S.

          #24
          Re: Sharp LC-70LE745U no backligth no image

          Budm is explaining in the last post of this thread: https://www.badcaps.net/forum/showth...ht=LC-70LE745U

          Comment

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

            #25
            Re: Sharp LC-70LE745U no backligth no image

            Found the problem i disconnected one side of lcd panel and it did turn on

            Comment

            • dick_barton
              Badcaps Legend
              • Aug 2015
              • 6642
              • Wales

              #26
              Re: Sharp LC-70LE745U no backligth no image

              I wonder if the set is suffering from a short circuit capacitor(s) on the panel strip that the tcon ribbons connect to. This has been found as one possible problem when the set powers up with one tcon cable disconnected.
              Willing to help but I'm no expert.

              Comment

              • budwich
                Badcaps Legend
                • Jul 2015
                • 3097
                • Canada

                #27
                Re: Sharp LC-70LE745U no backligth no image

                Originally posted by hmendez86
                Found the problem i disconnected one side of lcd panel and it did turn on
                so does that mean, you now addressed the problem and the tv is fully functional OR that you now think / know that there is a problem which causes only half the display to function? IF there is still a problem (half display), then you may have an issue on the side tabs OR as suggested, a problem with SMD components of the bottom edge boards that you left disconnected.
                Carefully check the side tabs to ensure you didn't re-install the panel such that they have been damaged / "misaligned". You can also do another test. On the side that was disconnected, look at the corner of the panel. There is a small ribbon cable that interconnects the bottom edge board to the side edge board. It is unclampable / unpluggable. Connect up all tcon to panel cables but disconnect that corner cable. Does the tv startup and display a "full picture"? Go from the result.

                Comment

                • nomoresonys
                  Badcaps Legend
                  • Jan 2013
                  • 12081
                  • U.S.

                  #28
                  Re: Sharp LC-70LE745U no backligth no image

                  Yep, check those little MLCC caps on the driver boards, see if any have low ohms, they usually read over 100 ohms when ok.

                  Comment

                  Related Topics

                  Collapse

                  • Document Archive
                    HP Elite Slice G2 + Image Load & Asset Tag Elite Slice i5-7500T Specification for Upgrade or Repair
                    by Document Archive
                    This specification for the HP Elite Slice G2 + Image Load & Asset Tag can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the Elite Slice G2 + Image Load & Asset Tag boardview and Elite Slice G2 + Image Load & Asset Tag schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please...
                    09-12-2024, 02:20 PM
                  • Document Archive
                    HP ProBook 450 G6 + Image Load & Asset Tag Notebook 400 Specification for Upgrade or Repair
                    by Document Archive
                    This specification for the HP ProBook 450 G6 + Image Load & Asset Tag Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the 450 G6 + Image Load & Asset Tag boardview and 450 G6 + Image Load & Asset Tag schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we...
                    09-06-2024, 10:56 AM
                  • Document Archive
                    HP ProBook 430 G6 + Image Load & Asset Tag Notebook 400 Specification for Upgrade or Repair
                    by Document Archive
                    This specification for the HP ProBook 430 G6 + Image Load & Asset Tag Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the 430 G6 + Image Load & Asset Tag boardview and 430 G6 + Image Load & Asset Tag schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we...
                    09-06-2024, 10:56 AM
                  • Document Archive
                    HP ProBook 430 G6 + Image Load & Asset Tag Notebook 400 Specification for Upgrade or Repair
                    by Document Archive
                    This specification for the HP ProBook 430 G6 + Image Load & Asset Tag Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the 430 G6 + Image Load & Asset Tag boardview and 430 G6 + Image Load & Asset Tag schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we...
                    09-06-2024, 10:56 AM
                  • Document Archive
                    HP ProBook 450 G6 + Image Load & Asset Tag Notebook 400 Specification for Upgrade or Repair
                    by Document Archive
                    This specification for the HP ProBook 450 G6 + Image Load & Asset Tag Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the 450 G6 + Image Load & Asset Tag boardview and 450 G6 + Image Load & Asset Tag schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we...
                    09-06-2024, 10:56 AM
                  • Loading...
                  • No more items.
                  Working...