Rca rlded5078a-d no backlight

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  • dskall
    Badcaps Legend
    • Oct 2016
    • 2905
    • usa

    #21
    Re: Rca rlded5078a-d no backlight

    It will be your pfc circuit. Coil or transformer inside hot section and controller. Not transformers that bridge hot and cold.
    I assume no responsibility for any stupid suggestions I might post.

    Comment

    • microvibe
      Badcaps Veteran
      • Mar 2013
      • 275
      • canada

      #22
      Re: Rca rlded5078a-d no backlight

      The controller is the large mofset with 4 legs? Not sure where in the pfc circuit I should see 360volts

      Comment

      • dskall
        Badcaps Legend
        • Oct 2016
        • 2905
        • usa

        #23
        Re: Rca rlded5078a-d no backlight

        You should see around 390vdc across c12 when powered on. 162vdc in standby
        I assume no responsibility for any stupid suggestions I might post.

        Comment

        • microvibe
          Badcaps Veteran
          • Mar 2013
          • 275
          • canada

          #24
          Re: Rca rlded5078a-d no backlight

          C12 gives 175v standby and same powered on. Today the backlights don't even come on. I don't have manual shows the back light on circuit.

          Comment

          • dskall
            Badcaps Legend
            • Oct 2016
            • 2905
            • usa

            #25
            Re: Rca rlded5078a-d no backlight

            I believe IC1 runs your pfc. What is number on chip?
            I assume no responsibility for any stupid suggestions I might post.

            Comment

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