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Samsung T240HD Screen Fading Flickering Issue

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    #1

    Samsung T240HD Screen Fading Flickering Issue

    I'm unsure if this issue is truly a caps issue, but I'm hoping that someone might be able to at least point me in the right direction. I have a Samsung T240HD, and the monitor/tv has started to buzz very loudly, as well as fade and flicker. I can also smell something slightly burning at times. This will happen on any input, even if there's no input connected. But the issue is intermittent, there's times when the tv will work ok for 10 minutes and go nuts again.

    Here's a video of the issues that I'm seeing (apologies for the cell phone quality, but it will show the issue):
    http://youtu.be/ARmHywbBMZ4

    And here's some pictures of the boards:
    http://www.the-noke.com/board_front.jpg
    http://www.the-noke.com/board_back.jpg

    I don't see any caps that are bulging. There is one resistor that seems to be burnt a bit on top, but I'm not sure if that's an issue. This is all pretty new to me. The monitor just ran out of warranty, so I'd rather see if I can fix it myself before going another route.

    Any ideas? Thanks!
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    #2
    Re: Samsung T240HD Screen Fading Flickering Issue

    The Samwha XC caps on your board are known bad caps and are common failures, and they don't always bulge. The symptoms your display has are common with bad caps or an intermittent connection.

    However the arcing/buzzing sound seems more like a CCFL tube wire has come loose or is dodgy and for some reason it isn't shutting the monitor down.
    Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
    For service manual, schematic, boardview (board view), datasheet, cad - use our search.

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      #3
      Re: Samsung T240HD Screen Fading Flickering Issue

      Not sure how I missed it when I first opened it, but I see the wire issues now that you were talking about. Nasty stuff.

      http://www.the-noke.com/burntwires.jpg

      What's the best method for repairing those? And is it possible to get the metal backing off to get into where the wires go?

      Lastly any good tutorial/vidoes showing how to replace the caps in a Samsung monitor?

      Thanks for the help, I appreciate it.

      Comment

        #4
        Re: Samsung T240HD Screen Fading Flickering Issue

        I have found the exact same issue with my Samsung T240.
        (SEE ATTACHMENT)
        I have removed the power board (Model # IP-58155A )
        Did you just replace your power board? Did you replace the wires? What solutions did you come up with? Or do you even still have this TV?
        Thanks
        Attached Files

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