Samsung UN55hu7200fxza dim top half of screen

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  • nwelec
    Senior Member
    • Dec 2014
    • 61
    • usa
    #1

    Samsung UN55hu7200fxza dim top half of screen

    This one the top half of the led strips are dimer than the lower half when the main board is plugged in. With the main board plugged into the power supply the voltages at pin 2 is 193v and pin 10 is 234v. When I unplug the main board from the power supply both pin 2 and 10 are 234v. I removed the panel and all of the led's look the same brightness so I am not sure if I am dealing with a bad set of led's or maybe a bad power supply. Any help would be appreciated.
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    • CapLeaker
      Leaking Member
      • Dec 2014
      • 7967
      • Canada
      #2
      Re: Samsung UN55hu7200fxza dim top half of screen

      I'd swap the 2 led strings around on the connector, plug it back in and retest. See if the problem moves.

        Comment

        • Andrew F. Ali
          Badcaps Legend
          • Jan 2014
          • 2450
          • Trinidad & Tobago
          #3
          Re: Samsung UN55hu7200fxza dim top half of screen

          Weak or dim Backlight strips at the top. Open up the Panel and replace ALL the Backlight strips wit NEW strips.

            Comment

            • nomoresonys
              Badcaps Legend
              • Jan 2013
              • 12075
              • U.S.
              #4
              Re: Samsung UN55hu7200fxza dim top half of screen

              Do CapLeaker's test, remember what bud says, opening the panel is the last thing you want to do.

                Comment

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