just a quick question do all qled leds appear blue when fault finding ?

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  • jimbofz
    Badcaps Veteran
    • Apr 2013
    • 537
    • uk

    #1

    just a quick question do all qled leds appear blue when fault finding ?

    i have replaced many leds strips that have changed blue when they are worn
    and the new replacements are perfect white
    but when fault finding do quantum leds always look blue?
  • nomoresonys
    Badcaps Legend
    • Jan 2013
    • 12082
    • U.S.

    #2
    QLEDS are blue then filtered, the leds you are use to are blue to start then they are coated with phosphor to emit white, this phosphor burns off over time or when poorly implicated and the blue light shows through which means they need replaced. So blue is normal for Qleds.

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    • jimbofz
      Badcaps Veteran
      • Apr 2013
      • 537
      • uk

      #3
      thanks
      so just like earlier leds
      when they are worn they give out blue light ,
      i understand now

      Comment

      • Diah
        Badcaps Legend
        • Feb 2013
        • 6346
        • Germany

        #4
        Originally posted by jimbofz
        but when fault finding do quantum leds always look blue?
        yes they are , the new too but not as dark / full blue

        Comment

        • nomoresonys
          Badcaps Legend
          • Jan 2013
          • 12082
          • U.S.

          #5
          Originally posted by jimbofz
          thanks
          so just like earlier leds
          when they are worn they give out blue light ,
          i understand now
          NO, Qled lights are blue that's normal, they get filtered differently than the older style led tvs. Meaning they do not get coated with the phosphor that makes the older style appear white.
          Last edited by nomoresonys; 08-29-2024, 03:56 AM.

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          • nomoresonys
            Badcaps Legend
            • Jan 2013
            • 12082
            • U.S.

            #6
            Seemed like you were having trouble grasping the concept, heres a teardown, this Qled tv has a yellow sheet that does the job the yellow phosphor does in the non-Qled tvs: https://www.youtube.com/watch?v=YYICw1dkpaA

            Comment

            • jimbofz
              Badcaps Veteran
              • Apr 2013
              • 537
              • uk

              #7
              thanks for all replies

              Comment

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