Bush LED4012FHDCNTD Backlights

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  • Bloopeta
    Badcaps Veteran
    • Jun 2018
    • 526
    • United Kingdom
    #1

    Bush LED4012FHDCNTD Backlights

    Hi all, I have a Bush LED4012FHDCNTD with a backlight fault.

    TV comes on as normal, backlights go out after a few mins, volume still present etc.

    Stripped it down and tested strips and all LEDs illuminate, have illuminated strips individually for half hour and non go off.


    Just wondering how I would connect tester to the plug to light the whole array? As there are 3 wires (pic attached)
    Attached Files
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    • Bloopeta
      Badcaps Veteran
      • Jun 2018
      • 526
      • United Kingdom
      #2
      Re: Bush LED4012FHDCNTD Backlights

      All sorted now

        Comment

        • budm
          Badcaps Legend
          • Feb 2010
          • 40746
          • USA
          #3
          Re: Bush LED4012FHDCNTD Backlights

          So what was the root cause of the issue then?
          Related to this thread? https://www.badcaps.net/forum/showth...216#post940216
          Last edited by budm; 02-04-2020, 08:15 AM.
          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

            • Bloopeta
              Badcaps Veteran
              • Jun 2018
              • 526
              • United Kingdom
              #4
              Re: Bush LED4012FHDCNTD Backlights

              Originally posted by budm
              So what was the root cause of the issue then?

              1 faulty LED, it went out eventually.
              Have replaced it and so far the TV has been running fine, been on a few hours now

              No not related to that one, suprisingly, they have the same model numbers, but are 2 completely different sets in every way
              Last edited by Bloopeta; 02-04-2020, 08:17 AM.

                Comment

                • Bloopeta
                  Badcaps Veteran
                  • Jun 2018
                  • 526
                  • United Kingdom
                  #5
                  Re: Bush LED4012FHDCNTD Backlights

                  I actually got this one, thinking they would be the same, and I could swap out the boards to diagnose the other one, but the model number is the only similarity

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