Question about Mamiya 645 Medium Format Camera

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Shutter stays open on mamiya 645 M

I did not use this camera for some time .battery was left in [dumb] I replaced batt. and loaded film shutter opens but will not close until I push down on batt. check button .The i noticed new batt. was comletely drained film ruined of course.No big deal but what could be wrong and what can I do to fix? Nick
e-mail nicbos@telus.net

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  • Anonymous Feb 06, 2009

    I have the same problem. Is my shutter busted or what?

  • DanB58 Feb 14, 2009

    Im having this same Problem .. I found if I hit the crank with a sharp blow in the palm of my hand it releases the shutter .... any ideas? Seems this is a common problem and there must be a fix ...

  • Anonymous Apr 05, 2009

    same problem

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  • 981 Answers

Get any crud from the battery out of the works with pH-neutral stuff and q-tips or lint-free towels, and see if it works (without film; might as well check current drain with a bench supply instead of a battery, too) once you've done a satisfactory job of that.  Then visit a shop so they can see if the shutter timing is tolerable...and perhaps sometime you can load film in again.

Posted on Jul 31, 2008

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