Samsung UE32F5000AK Backlight issue

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  • Bisketti
    Badcaps Veteran
    • Oct 2013
    • 252
    • Ireland
    #1

    Samsung UE32F5000AK Backlight issue

    Hi I have been reading other threads but Im getting odd reading on the CNL802

    With cable in CNL802 and connected to backlight readings are.
    1+ =200v fluctuating to below 180v
    1- = 0v
    2+ =0v
    2- =0v
    3+ =0v
    3- =0v
    4+ =0v
    4- =0v

    With cable removed from connector readings are
    1+ =200v fluctuating to below 180v
    1- = 0v
    2+ =0v
    2- =0v
    3+ =0v
    3- =0v
    4+ =0v
    4- =100v fluctuating to below 80v

    Would this be a strip issue or powerboard?
    Attached Files
    Tags: None
    • budm
      Badcaps Legend
      • Feb 2010
      • 40746
      • USA
      #2
      Re: Samsung UE32F5000AK Backlight issue

      You have open circuit in the LED strings.
      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

        • Bisketti
          Badcaps Veteran
          • Oct 2013
          • 252
          • Ireland
          #3
          Re: Samsung UE32F5000AK Backlight issue

          Many thanks for the reply, any idea where to get spares?

            Comment

            • Hamie
              Badcaps Legend
              • Apr 2014
              • 1383
              • UK
              #4
              Re: Samsung UE32F5000AK Backlight issue

              I've got some individual leds cut out that you can stack if you cant find strips.

                Comment

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