Mamiya 645 front shutter not working

Discussion in 'Medium Format & Large Format' started by earthmanbuck, Oct 8, 2017.

  1. earthmanbuck

    earthmanbuck TPF Noob!

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    I recently picked up a Mamiya 645 for a not-too-bad price on eBay. I haven't shot with it yet, but it seems to be in good working order...except for the front shutter button, which doesn't do anything when I push it in. The top shutter button works fine, and so does the front one if I use a release cable, but I'd like to be able to use it with the grip that came with it. Does anyone have any suggestions for how to fix this, short of taking it in?


     
  2. compur

    compur No longer a newbie, moving up!

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    There is a ring around the front shutter release to lock or unlock it. Is it locked?
     
  3. earthmanbuck

    earthmanbuck TPF Noob!

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    Nope, not locked—the lock affects both shutter releases, so if it was on neither would work. I tried locking and unlocking it a few times too just to be sure. There's also a new battery in there, so it's not that either.

    The weird thing is, I bought the camera and lens from two different sellers...the camera arrived first, and when it did I played around with it a bit and I'm pretty sure I got the front shutter release to work at least once.
     
  4. compur

    compur No longer a newbie, moving up!

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    Then I'd say it's a repair issue.
     
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  5. earthmanbuck

    earthmanbuck TPF Noob!

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    Ah heck. Thanks. I'll probably shoot a roll with it first before taking it in to make sure nothing else needs work.
     
  6. earthmanbuck

    earthmanbuck TPF Noob!

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    I'm still planning on taking it in after I shoot a roll, but I have been able to get the front shutter release working by jabbing at it quickly. It doesn't work if you press it (or use the grip), but if you give it a quick hard poke it does fire. Not at all practical for use, but that makes me think the problem is just with the button itself rather than something more internal. This is good news, I think.
     
  7. OldManJim

    OldManJim TPF Noob!

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    Sounds like a mechanical problem. You might try blowing some air in there, could just be a piece of dirt stuck in the sleeve.
     

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