Resolved Loose screw

Discussion in 'Aluma AC Series CMOS' started by ndmartin747, Feb 2, 2026.

  1. ndmartin747

    ndmartin747 Cyanogen Customer

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    As I was stowing the gear (AC 4040, FW7, SC3, and AO X) I heard something rattling around in the FW7.
    It was a loose screw. Disassembly of all the components, except the AC4040, shed no light on the screw's origin. However, I noticed the AC 4040's shutted was slightly ajar.
    The shutter is ajar after power-up, closed during and after dark frames, and fully open for light frames. Please see photos.
    Could this screw have come from a shutter mechanism? If so, is it something I could repair? If, as they say, ignorance is bliss, should I forget about it?
    Thank you.
     

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  2. Doug

    Doug Staff Member

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    Might be one of the screws that holds the shutter vanes. You might want to pop the front lid off the 4040 and have a look.
     
  3. ndmartin747

    ndmartin747 Cyanogen Customer

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  4. ndmartin747

    ndmartin747 Cyanogen Customer

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    The loose screw was indeed one of two screws on a shutter vane. The second screw was loose.
     

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  5. Doug

    Doug Staff Member

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    Sorry that happened - I'll raise it with production. In the meantime... I'll assume you've fixed the problem!
     
  6. Colin Haig

    Colin Haig Staff Member

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    If I recall correctly, there is a plastic tool that comes with the 4040 that can help with aligning the shutter in case the screws came loose in shipping.
     
  7. Doug

    Doug Staff Member

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    Not needed in this case - it's not the set screw that came loose. He just needs to reinstall the screw, tighten both, and done.
     
  8. ndmartin747

    ndmartin747 Cyanogen Customer

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    Hi Colin , I finally got another clear night and, when taking some dark framec, found light leaking through an almest closed shutter. I have checked for the plastic tool that you mentioned but can't find it. Is that something I can make?
     
  9. Colin Haig

    Colin Haig Staff Member

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    Neil, do you have access to a 3D printer?
    If so you can print the alignment tool.
    Let me know and I will send the STL file for printing.
     
  10. ndmartin747

    ndmartin747 Cyanogen Customer

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    Hi Colin, I found a local 3D printer that will print it. Darn - I really wanted a reason to buy a printer.
    Thanks
     
    Last edited by a moderator: Apr 9, 2026
  11. Colin Haig

    Colin Haig Staff Member

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    Private Message sent here on the forum. Check the Inbox. (Upper right).
     
  12. Colin Haig

    Colin Haig Staff Member

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    Glad to hear the 3D printed allignment tool worked. Marking this as resolved.
     

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