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Samsung S24D360HL White-Black-White-Black

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    Samsung S24D360HL White-Black-White-Black

    I have Samsung S24D360HL digital monitor and the other day when powered on it went White-Black-White-Black etc... but each time I could see the video was there but the "on/off" cycle continues. So I'm certain video signal is arriving and being processed.

    I checked the power supply, power seemed good, checked a few caps near the power input but not seeing any open/shorts etc.

    Tried to find a schematic but no joy.

    Seen this? Any recommendation regarding possible TS process or a root cause? Happy to post any additional information or answer any questions.

    Many thanks in advance, whatever the final outcome!
    Attached Files
    Last edited by mslupczynski; 03-11-2021, 04:05 PM.

    #2
    Re: Samsung S24D360HL White-Black-White-Black

    Was the voltage at the output of the power supply measured with the connected board (with a load)?

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      #3
      Re: Samsung S24D360HL White-Black-White-Black

      Great point. In fact, it was not. I know what I need to check.

      Thank you.

      Comment


        #4
        Re: Samsung S24D360HL White-Black-White-Black

        Are you saying the picture goes WHITE, then DARK. or does it go PROPER VIDEO then DARK? I suspect you have a backlight issue, likely a bad led in the panel.

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          #5
          Re: Samsung S24D360HL White-Black-White-Black

          Thanks for helping me clarify.

          Once the monitor is powered on...the screen goes from good video to dark in a never ending succession. The good video is as normal and clear as could be.

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            #6
            Re: Samsung S24D360HL White-Black-White-Black

            Try turning down the brightness to see if the picture stays on longer, I suspect there is a bad led in the panel causing the backlight circuit to over voltage or under current error.

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              #7
              Re: Samsung S24D360HL White-Black-White-Black

              For whatever reason I'm unable to take control or interrupt the vid to no-vid sequence with the external controls. I can power on/off but it seems like the external controls are not available during this on/off process.

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