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01-23-2016, 09:32 AM   #1
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Pentax ME shutter problem

Hi, I got film camera bug and picked up another film camera from my local craigslist. This time it is Pentax ME comes with 50mm 2.0 lens. The shutter was stuck but seller told me that it need new batteries.

I put new batteries in but still same issue. I open up the bottom plate and discovered that camera fires fine when it is upside down position even without batteries. But as soon as I bring the camera back in regular position shutter won't fire.

I am not sure why camera is working fine in upside but got stuck in regular position.....any help?

Thanks, Pendu

01-23-2016, 11:05 AM   #2
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I once had the same problem with my Nikon F3HP and it had to be sent in repairs. In that case, I never found out the exact cause but instead had a repair done to fix it; there was something wrong with the shutter release mechanism.

The only other thing I can think of is that perhaps there is a slight gap between the battery and the contact when the camera is upright. Perhaps ever so slightly lift up the lead that would touch the button cell and see if that helps.

Last edited by Alex645; 02-07-2016 at 02:11 PM.
01-23-2016, 12:21 PM   #3
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Original Poster
Hi Alex,

Thanks for your response. When I took the bottom plate off and took the batteries out, Camera won't fire in upright position but fire totally fine when it is upside down. So batteries are clearly not an issue here. But thanks for the tip.

Thanks, Pendu
01-23-2016, 01:37 PM   #4
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Have a look at this thread . In one of the postings somebody posted a link to a file called "ME Super ramblings" - this is something, that could enligthen your matter.

02-07-2016, 02:05 PM - 2 Likes   #5
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Spring is off

Sorry I'm late to this discussion. Most likely the spring on the release slide has come off (parts A500 and A510). I repaired this exact problem several years ago. It's not an easy fix since the mirror box needs to be removed to gain access.
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02-07-2016, 08:45 PM   #6
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Hi Scanogram,

Thanks for the info and diagram listing various parts. As you mentioned that it is a difficult repair, I guess I will sell the camera as is and let someone play with it.

Thanks again.


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