Samsung QLED QE65QN800A 8k keeps cycling on/off

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  • jagiro84
    Member
    • Jan 2020
    • 40
    • Netherlands
    #1

    Samsung QLED QE65QN800A 8k keeps cycling on/off

    I am having issues with my TV which is repeatedly turning itself on and off , some time's it would show a boot logo and the homescreen and then repeat the power cycle, and sometimes if I am quick I can reach the settings menu and it would stay working and other times shutdown again.

    Here is a video of the symptoms the TV has:
    https://vimeo.com/1117381014?fl=pl&fe=sh

    I have already opened up the one box that's connected to the TV , and the TV back itself , after inspecting each of the components I can see no burn marks or swollen capacitors.

    Also I noticed if I leave the one box disconnected for let's say 10min and start the TV again it would easier boot to the main screen and work for 10-15 seconds before shutting down, as most of the times it shuts down right after the boot logo.




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    • jagiro84
      Member
      • Jan 2020
      • 40
      • Netherlands
      #2
      Another thing I noticed is when I plug in mine fire stick tv it is showing some kind of artifacts in the image, I was quick enough to capture it with my phone before it turned off

      Could this be due to failure of the GPU/CPU inside the panel? Or the image processing chip that's inside the one box?
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        • jagiro84
          Member
          • Jan 2020
          • 40
          • Netherlands
          #3
          I did some more testing , and I noticed whenever I disable 1 part of the screen(doesn't matter which one) the TV would stay on and there are no artifacts or reboots .

          Maybe the TV is struggling to keep the voltage stable with everything connected?
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