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Toshiba 47L6453D LED Strip component

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    Toshiba 47L6453D LED Strip component



    Does any of you guys know what this blown component might be and what you would do if you had to fix it?

    The component next to it has ae written on it very feintly.


    Cheers chaps

    #2
    Re: Toshiba 47L6453D LED Strip component

    Can't see it.

    Comment


      #3
      Re: Toshiba 47L6453D LED Strip component

      the pic or the component?

      Comment


        #4
        Re: Toshiba 47L6453D LED Strip component

        The burnt protection diode?
        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


          #5
          Re: Toshiba 47L6453D LED Strip component

          yes, any idea what to replace it with?


          Or, is it suggesting a fault somewhere else that caused failure?
          Last edited by caveman11; 10-18-2019, 09:51 AM.

          Comment


            #6
            Re: Toshiba 47L6453D LED Strip component

            That’s a TVS diode and it’s shorted to GND. Remove it and short is gone, but then you have no protection.

            Comment


              #7
              Re: Toshiba 47L6453D LED Strip component

              Did you verify that you do not have shorted out or open LED's in that strip?
              Can we also see the straight shot pictures instead of in the angle?
              Last edited by budm; 10-18-2019, 10:45 AM.
              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


                #8
                Re: Toshiba 47L6453D LED Strip component

                Originally posted by budm View Post
                Did you verify that you do not have shorted out or open LED's in that strip?
                Can we also see the straight shot pictures instead of in the angle?


                What's the worst that can happen if I just removed it?

                close up pic added.


                All leds on the strip and all others working ok.

                Comment


                  #9
                  Re: Toshiba 47L6453D LED Strip component

                  It is for protection, not needed to function.
                  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


                    #10
                    Re: Toshiba 47L6453D LED Strip component

                    I am thinking same what budm said. The diode went, because there is a very likely probability that there is something wrong with that LED string first place. See, LED's are current controlled, not voltage controlled.
                    If you do decide to remove that diode, the short goes away and it should fire up. However, there is no over voltage protection anymore. Probably you will find out that there are some bad LED's on that strip.

                    Comment


                      #11
                      Re: Toshiba 47L6453D LED Strip component

                      Originally posted by CapLeaker View Post
                      I am thinking same what budm said. The diode went, because there is a very likely probability that there is something wrong with that LED string first place. See, LED's are current controlled, not voltage controlled.
                      If you do decide to remove that diode, the short goes away and it should fire up. However, there is no over voltage protection anymore. Probably you will find out that there are some bad LED's on that strip.
                      Thanks. I will let you know in a day or two how i get on

                      Comment


                        #12
                        Re: Toshiba 47L6453D LED Strip component

                        Removed that component...not really much of it left to remove.


                        Now the leds will sometimes:-

                        not turn on at all
                        turn on but go off after a few seconds
                        stay on

                        ...completely at random.

                        All leds illuminate equally.

                        Comment


                          #13
                          Re: Toshiba 47L6453D LED Strip component

                          an led has gone faulty. they can fail like that. Now, turn the backlights waaay down and retest.

                          Comment


                            #14
                            Re: Toshiba 47L6453D LED Strip component

                            Originally posted by CapLeaker View Post
                            an led has gone faulty. they can fail like that. Now, turn the backlights waaay down and retest.
                            wouldn't it be better to turn them up to flush out the faulty one?

                            Comment


                              #15
                              Re: Toshiba 47L6453D LED Strip component

                              Sounds like it is time to replace the whole set of the LED strips.
                              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: Toshiba 47L6453D LED Strip component

                                LOL, good answer Bud.

                                Comment


                                  #17
                                  Re: Toshiba 47L6453D LED Strip component

                                  Originally posted by budm View Post
                                  Sounds like it is time to replace the whole set of the LED strips.
                                  I would but its a very unusual set and can only find them abroad with long delivery times.

                                  Comment


                                    #18
                                    Re: Toshiba 47L6453D LED Strip component

                                    Just buy them from ali express
                                    they are about £24 delivered

                                    they take about 2 -3 weeks to come across

                                    Comment

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