Toshiba 48L5463DN no picture, backlight on

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  • budm
    Badcaps Legend
    • Feb 2010
    • 40746
    • USA
    #21
    Re: Toshiba 48L5463DN no picture, backlight on

    The AVDD is the boosted Voltage for running the COF's (Chip On Film) which are embedded on those flexible ribbon cable between LCD glass panel and the tab bonding board.
    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

      • Stigsolbjerg
        Member
        • Mar 2020
        • 33
        • Danmark
        #22
        Re: Toshiba 48L5463DN no picture, backlight on

        Well now i almost have fixed the unrepareble panel board.
        I took these to caps of the board, and one one of them was bad, so i replaced it with one from a hairdryer (about same fysical size), and got this picture on the screen. Now i just need to get rid off those lines, but how?
        Attached Files

          Comment

          • nomoresonys
            Badcaps Legend
            • Jan 2013
            • 12206
            • U.S.
            #23
            Re: Toshiba 48L5463DN no picture, backlight on

            Are you sure that no more caps are bad on that driver board??
            Quit because THIS SITE LETS A ROGUE MEMBER TYPE ANY GARBAGE HE PLEASES AND THE POWERS THAT BE NEVER DO ANYTHING ABOUT IT SO HE NEVER QUITS. THEN YOU GET A PENALTY FOR RESPONDING TO HIS ATTACKS. BEEN GOING ON FOR WAY TOO LONG. DONE SUPPORTING A SITE THAT ALLOWS THIS BS.

              Comment

              • budm
                Badcaps Legend
                • Feb 2010
                • 40746
                • USA
                #24
                Re: Toshiba 48L5463DN no picture, backlight on

                Originally posted by Stigsolbjerg
                Well now i almost have fixed the unrepareble panel board.
                I took these to caps of the board, and one one of them was bad, so i replaced it with one from a hairdryer (about same fysical size), and got this picture on the screen. Now i just need to get rid off those lines, but how?
                It is unrepairable if the COF shorted out, but as you can see, you need to check all the caps for bad resistance reading.
                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

                  • Stigsolbjerg
                    Member
                    • Mar 2020
                    • 33
                    • Danmark
                    #25
                    Re: Toshiba 48L5463DN no picture, backlight on

                    Hi i can now call it a succes, the tv has been running for two nights now. The lines went away when i reseated all the cables on the boards. So i want to thank you all very much for your help on this projekt. So yokoono and budm if you ever come to Denmark, beers are on mee.
                    Attached Files
                    Last edited by Stigsolbjerg; 03-12-2020, 03:18 PM.

                      Comment

                      • frica
                        Member
                        • Nov 2017
                        • 37
                        • Spain
                        #26
                        Re: Toshiba 48L5463DN no picture, backlight on

                        +1

                          Comment

                          • nomoresonys
                            Badcaps Legend
                            • Jan 2013
                            • 12206
                            • U.S.
                            #27
                            Re: Toshiba 48L5463DN no picture, backlight on

                            Nice fix, thanks for the feedback.
                            Quit because THIS SITE LETS A ROGUE MEMBER TYPE ANY GARBAGE HE PLEASES AND THE POWERS THAT BE NEVER DO ANYTHING ABOUT IT SO HE NEVER QUITS. THEN YOU GET A PENALTY FOR RESPONDING TO HIS ATTACKS. BEEN GOING ON FOR WAY TOO LONG. DONE SUPPORTING A SITE THAT ALLOWS THIS BS.

                              Comment

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