Hisense 50K360N screen going on and off when changing between picture modes

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  • jmandawg
    Member
    • Jul 2020
    • 42
    • USA

    #1

    Hisense 50K360N screen going on and off when changing between picture modes

    Hi all,

    I have a Hisense 50K360N when switching between picture modes, certain modes will cause the screen to start flashing to a black screen every second. Changing the adaptive backlight setting or chainging the backlight level from 100 to 99 will make it stop, i can then set it back to 100 and it will be fine. But when i switch between the picture modes it happens again.

    Any ideas? I watch a few youtube vids and it seems like it might be the power supply or backlight. I did take it apart and look at the caps and they all looked fine.

    Any suggetions?

    Thanks.
  • nomoresonys
    Badcaps Legend
    • Jan 2013
    • 12097
    • U.S.

    #2
    Re: Hisense 50K360N screen going on and off when changing between picture modes

    You should not run the backlight level at 100, should set it to as low as you can tolerate the display to keep the backlights from burning out, it will extend their life as well.

    Comment

    • budm
      Badcaps Legend
      • Feb 2010
      • 40746
      • USA

      #3
      Re: Hisense 50K360N screen going on and off when changing between picture modes

      Yep, turn down the backlights level to as low as possible on all modes and on all inputs, and recheck them again after turning the TV of and then back on to make sure the settings stay. It sounds like the LED's are failing at full drive.
      Never stop learning
      Basic LCD TV and Monitor troubleshooting guides.
      http://www.badcaps.net/forum/showthr...956#post305956

      Voltage Regulator (LDO) testing:
      http://www.badcaps.net/forum/showthr...999#post300999

      Inverter testing using old CFL:
      http://www.badcaps.net/forum/showthr...er+testing+cfl

      Tear down pictures : Hit the ">" Show Albums and stories" on the left side
      http://s807.photobucket.com/user/budm/library/

      TV Factory reset codes listing:
      http://www.badcaps.net/forum/showthread.php?t=24809

      Comment

      • jmandawg
        Member
        • Jul 2020
        • 42
        • USA

        #4
        Re: Hisense 50K360N screen going on and off when changing between picture modes

        thanks for the help guys. Unfortunately if you try to modify one of the presets, it copies that preset into the custom settings, so the named presets won't save changes.

        Luckly i found in the service menu there is an option for max backlight, i changed this from 255 to 200 issues seems resolved for now.

        Thanks again.

        Comment

        • nomoresonys
          Badcaps Legend
          • Jan 2013
          • 12097
          • U.S.

          #5
          Re: Hisense 50K360N screen going on and off when changing between picture modes

          Yep, you need to do it from the service menu on some tvs, thanks for feedback.

          Comment

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