Hello, do you know what is this component pls of Nikon D800 camera shutter?

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  • corrize
    Badcaps Veteran
    • Apr 2021
    • 272
    • France

    #1

    Hello, do you know what is this component pls of Nikon D800 camera shutter?

    It is on « board » of Nikon D800 camera shutter, probably for command electro magnet (the green stuff). The chip is marking G11 and have a polarity mark, so maybe dual diode ?
    The chip is good, the goal is I can deduce the value of the capacitor missing above.
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    Last edited by SMDFlea; 08-28-2022, 09:38 AM.
  • pavithra_uk
    Member
    • Nov 2010
    • 44

    #2
    Re: Hello, do you know what is this component pls of Nikon D800 camera shutter?

    Chip can be FMG11A Dual N transistors
    if so, capacitor may be 0.1uf - 1uf

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    • corrize
      Badcaps Veteran
      • Apr 2021
      • 272
      • France

      #3
      Re: Hello, do you know what is this component pls of Nikon D800 camera shutter?

      Update : I tested with 10uF cap (not found closest value in my stock) and the shutter works. The first curtain moved (before nothing was appening).
      But the first curtain stayed stuck, so I was doubt on mechanical issue.
      I have another D800 with shutter working fine (but another issue), I disassembled and checked, and found a difference of behaviour. I found a little metal part with no spring reaction (on all curtain's positions) compared with the good shutter (it has permanent spring reaction). So shutter need to be replaced.
      I tryed to measure the capacitor onboard and found no value, probably out of range of my cheap meter.
      If the shutter hadn't had a mechanical problem, I would have replaced it with a 1uF capacitor.
      Thanks for help.

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      • sam_sam_sam
        Badcaps Legend
        • Jul 2011
        • 6039
        • USA

        #4
        Re: Hello, do you know what is this component pls of Nikon D800 camera shutter?

        I would replace the capacitor anyway and see if the motor runs just for the fun of but that is just me

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        • corrize
          Badcaps Veteran
          • Apr 2021
          • 272
          • France

          #5
          Re: Hello, do you know what is this component pls of Nikon D800 camera shutter?

          I did it, But the motor is not on the shutter. It turn. The little electronic seems control two electro magnet (green stuff) for stopers.
          At the first test, I said ; "nothing happen" but in fact the motor turned but curtain did not move. It was stucked.

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