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lg 50lb6300 flashing leds after 10 min.

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    lg 50lb6300 flashing leds after 10 min.

    set came to shop with flashing leds.found 3 bad leds on 3 different strips using SJ led tester.replaced all strips with new ones from SJ.no joy. hard wired and soldered all strip jumpers and connections.also reflowed solder connections on power board where led connecter plugs in.same result.all 5 rows light up at plug in but after 10 min 3 rows begin flashing and nothing from other 2 rows.jumper 2 center pins on led plug all 5 rows light using tester.I'm thinking nothing else could be the culprit other than power board.anyone run into this problem?

    #2
    Re: lg 50lb6300 flashing leds after 10 min.

    I forgot to add that the some of the voltages to the main board from the PS are reading negative. I found pins 1,2,3,5,6,7,9,10,11,14 and 17 are all in the negative. sorry, I posted to the wrong thread.
    Last edited by nwcs; 02-22-2019, 03:50 PM. Reason: posted to the wrong thread

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      #3
      Re: lg 50lb6300 flashing leds after 10 min.

      ....
      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


        #4
        Re: lg 50lb6300 flashing leds after 10 min.

        turn down the back lights to next to nothing and see what happens

        Comment


          #5
          Re: lg 50lb6300 flashing leds after 10 min.

          He made new thread for his TV: https://www.badcaps.net/forum/showthread.php?t=75053
          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


            #6
            Re: lg 50lb6300 flashing leds after 10 min.

            Yes, sorry I replied to the wrong thread.

            Comment


              #7
              Re: lg 50lb6300 flashing leds after 10 min.

              no worries...

              Comment

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