buzzing sound. how to locate bad component

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  • ktmmotocross
    Boardkiller
    • Feb 2014
    • 3553
    • slovakia
    #1

    buzzing sound. how to locate bad component

    hello. have toshiba notebook that have short on 19V power rail.
    injecting voltage and short gone, but culd not locate bad conponent.
    board work now ok but it comes buzzing sound from board. i cannot locate source of this sound.

    any advice how to locate this bad buzzing component?
    Tags: None
    • stj
      Great Sage 齊天大聖
      • Dec 2009
      • 30910
      • Albion
      #2
      Re: buzzing sound. how to locate bad component

      put your finger on it and it wont vibrate.
      99% chance it's a coil, but it could be vibrating because of something else connected to it like a bad diode or capacitor.

        Comment

        • nazrul145
          Badcaps Veteran
          • Jan 2014
          • 333
          • BD
          #3
          Re: buzzing sound. how to locate bad component

          Board ok means power and display ok?

            Comment

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