Samsung UN60J6200AF backlight flashing

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  • superg
    Senior Member
    • Dec 2013
    • 58
    • Barbados
    #1

    Samsung UN60J6200AF backlight flashing

    Hi guys
    This TV backlight flashes constantly from the time it is plugged in. Unplugging the Mother board causes no change. I thought it was bad leds so I opened the panel and attached an LED tester and all the leds lit up which led me to conclude it was a bad power supply. I replaced it but the problem still remains.What I have noticed is the standby and the voltage across the mains filter caps are fluctuating and very low, eg standby 4 - 6 V and mains 150 - 160V . With the back light disconnected standby is 13V on and mains 390V. What am I missing here? I did a video when I was testing the backlight. I would have to post a link .
    Tags: None
    • budm
      Badcaps Legend
      • Feb 2010
      • 40746
      • USA
      #2
      Re: Samsung UN60J6200AF backlight flashing

      We need good clear pictures of the whole backside of the TV showing how all the boards are connected together, then the pictures of the whole top and bottom side of the power supply board.
      Power suPply P/N is BN44-?????
      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

        • superg
          Senior Member
          • Dec 2013
          • 58
          • Barbados
          #3
          Re: Samsung UN60J6200AF backlight flashing

          photos,and video links

          https://drive.google.com/file/d/1L6F...ew?usp=sharing
          backlight testing

          https://drive.google.com/file/d/1M88...ew?usp=sharing
          fault
          Attached Files
          Last edited by superg; 01-07-2018, 09:23 AM.

            Comment

            • thoma
              Badcaps Veteran
              • Sep 2012
              • 268
              • Germany
              #4
              Re: Samsung UN60J6200AF backlight flashing

              http://forum.iwenzo.de/grundig-servi...e--t61847.html

              LED Repairtips

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