Samsung Un75f7 100 top screen dark

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  • freakaftr8
    Badcaps Legend
    • Oct 2012
    • 3743
    • USA
    #1

    Samsung Un75f7 100 top screen dark

    Before I crack this thing open has anyone encountered any issues with this model yet? It doesn't appear the panel itself is having an issue but it's very dark on the top it looks like the backlighting is having a problem on the top left and right side about a quarter of the way down the screen. Any thoughts?

    The panel seems to have perfect refresh it's just darker on the top
    Attached Files
    Last edited by freakaftr8; 11-26-2015, 02:57 AM.
    Did I leave the soldering iron on?
    Tags: None
    • tw2005
      Badcaps Legend
      • Oct 2011
      • 6458
      • Australia
      #2
      Re: Samsung Un75f7 100 top screen dark

      Not that i have any real experience with these but with the sole 55" LED edgelit D6000 series I tinkered with I'd say you're on the money. With mine it had a 4 channel edgelit system but being in series any dead LED caused the bank to fail and that produced endless reboots due to the fault detection.

      I did manage just for the hell of it to link across the dead section and it ran fine for about 10hrs but the voltage across fewer LEDs just burnt them out

      When I stripped it, sure enough there were dead LEDs on the top channel so I'd say there's a fair chance that's what you have except it's happy running on the remaining 3/4 channels.

      Taught me one thing, stick with my trusty old tech Panny Plasmas

        Comment

        • freakaftr8
          Badcaps Legend
          • Oct 2012
          • 3743
          • USA
          #3
          Re: Samsung Un75f7 100 top screen dark

          I think you are spot on with the top bank led out. Now I just have to muster up the courage to remove this 75 inch panel!

          And yes, my Panny,s are not going anywhere either!
          Did I leave the soldering iron on?

            Comment

            • freakaftr8
              Badcaps Legend
              • Oct 2012
              • 3743
              • USA
              #4
              Re: Samsung Un75f7 100 top screen dark

              Ok sure enough they pulled the back off and there's two Bank of LED drivers on the power supply the whole top bank connector I can unplug and it does not change. Looks like I'll be removing the panel.
              Did I leave the soldering iron on?

                Comment

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