Samsung UN40D6400 led problem

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  • Diah
    Badcaps Legend
    • Feb 2013
    • 6343
    • Germany

    #61
    Re: Samsung UN40D6400 led problem

    change yours metter on diode beep lol

    Comment

    • dick_barton
      Badcaps Legend
      • Aug 2015
      • 6642
      • Wales

      #62
      Re: Samsung UN40D6400 led problem

      I don't know if the leds could be stripped of this unit to repair your set. Each operates at 6V.

      http://www.iccfl.com/product_info.php?products_id=21544
      Willing to help but I'm no expert.

      Comment

      • Malachi
        Badcaps Legend
        • Dec 2015
        • 1077
        • Usa

        #63
        Re: Samsung UN40D6400 led problem

        Originally posted by dick_barton
        I don't know if the leds could be stripped of this unit to repair your set. Each operates at 6V.

        http://www.iccfl.com/product_info.php?products_id=21544
        Is there in interchangeable led strip I could get or am I stuck with one with the same exact number?
        I'm telling you guys, I don't have the skill to change these little LEDs.
        Last edited by Malachi; 03-22-2016, 05:29 PM.

        Comment

        • Diah
          Badcaps Legend
          • Feb 2013
          • 6343
          • Germany

          #64
          Re: Samsung UN40D6400 led problem

          Originally posted by dick_barton
          I don't know if the leds could be stripped of this unit to repair your set. Each operates at 6V.

          http://www.iccfl.com/product_info.php?products_id=21544
          this is not what he have on this tv.

          Comment

          • Diah
            Badcaps Legend
            • Feb 2013
            • 6343
            • Germany

            #65
            Re: Samsung UN40D6400 led problem

            Originally posted by Malachi
            Is there in interchangeable led strip I could get or am I stuck with one with the same exact number?
            I'm telling you guys, I don't have the skill to change these little LEDs.
            you need to trust your self, if yours hand soldering iron had the solder head 0.5 or 1.0 mm you can do it easly.. believe me,, i did it and no way of mistake even you exchange all the 72 leds

            Comment

            • Malachi
              Badcaps Legend
              • Dec 2015
              • 1077
              • Usa

              #66
              Re: Samsung UN40D6400 led problem

              Originally posted by Diah
              change yours metter on diode beep lol
              When I do that, they don't beep.
              I think I'm done with this TV. Time to scrap it. Thanks for all the help guys.
              Last edited by Malachi; 03-22-2016, 05:38 PM.

              Comment

              • Diah
                Badcaps Legend
                • Feb 2013
                • 6343
                • Germany

                #67
                Re: Samsung UN40D6400 led problem

                your choice, but when no beep it show you the residences of the led if its below 700 it mean leaks.

                Comment

                • Malachi
                  Badcaps Legend
                  • Dec 2015
                  • 1077
                  • Usa

                  #68
                  Re: Samsung UN40D6400 led problem

                  None of them beep so that means they are all bad? But we know that only 18 out of 72 don't light.

                  Comment

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

                    #69
                    Re: Samsung UN40D6400 led problem

                    Come on Diah you should know that they shouldn't beep if so that means they are shorted. Normally test them and see which one does not light. Reverse bias your meter leads in diode mode and test the Leds see if any do not light.
                    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

                    • Malachi
                      Badcaps Legend
                      • Dec 2015
                      • 1077
                      • Usa

                      #70
                      Re: Samsung UN40D6400 led problem

                      Originally posted by ReeceyBurger123
                      Come on Diah you should know that they shouldn't beep if so that means they are shorted. Normally test them and see which one does not light. Reverse bias your meter leads in diode mode and test the Leds see if any do not light.
                      I done even know what that means. Lol.
                      I do have a pc psu rigged up like you did in your video. Can I use the. 5v on each led? One lead on one side and one on the other?

                      Comment

                      • budm
                        Badcaps Legend
                        • Feb 2010
                        • 40746
                        • USA

                        #71
                        Re: Samsung UN40D6400 led problem

                        Originally posted by ReeceyBurger123
                        Come on Diah you should know that they shouldn't beep if so that means they are shorted. Normally test them and see which one does not light. Reverse bias your meter leads in diode mode and test the Leds see if any do not light.
                        His meter cannot light up LEDs that are in series internally with Vf of 6V, it probably does not put out enough Voltage to bias on the two 3V Vf LEDs connected in series.
                        He can put two white LEDs in series and find out if his meter is capable or not.
                        Internally the LED also has protection diode connected in antiparallel fashion.
                        Last edited by budm; 03-22-2016, 09:42 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

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