Olympus OM2 - manual shutter speed doesn't work

awaken77 · Sep 12, 2008

In auto mode (aperture priority) shutter works ok, at least it gives correctly exposed images.
In manual mode, shutter speed dial doesn't change anything. Only "B" setting works, all other settings trigger shutter at 1/60 or 1/125 (as I can detect by clicking sound).

John Hermanson · Sep 15, 2008

Many things could be causing this problem and it can't be diagnosed by email. If you're interested, I'd be happy to do the repair work for you. Please see my website for more information. John, http://www.zuiko.com

Excalibur2 · Sep 15, 2008

awaken77 said:
In auto mode (aperture priority) shutter works ok, at least it gives correctly exposed images.
In manual mode, shutter speed dial doesn't change anything. Only "B" setting works, all other settings trigger shutter at 1/60 or 1/125 (as I can detect by clicking sound).

Same fault with my OM20 and a guy on some forum has the same problem with the manual speed adaptor inserted into his OM10....so it would seem it's a basic weakness on OM series cameras.

MattKing · Sep 16, 2008

Excalibur2 said:
Same fault with my OM20 and a guy on some forum has the same problem with the manual speed adaptor inserted into his OM10....so it would seem it's a basic weakness on OM series cameras.

This seems to be an interesting approach to inductive logic :rolleyes:

I have six different OM bodies now (including 2 OMGs/OM20s), and have owned and used (and in the very distant past sold) OM cameras for about 1/3rd of a century or so, and haven't seen or heard any evidence of any such "basic weakness".

I expect that if it was a systemic problem, John Hermanson would have been happy to confirm it.

Somehow, this makes me think of Fermat numbers, vs. Fermat primes.

Matt

Excalibur2 · Sep 16, 2008

MattKing said:
I expect that if it was a systemic problem, John Hermanson would have been happy to confirm it.

Matt

Well it could be the same systemic problem that pops up with age or non use, similar to the sticking shutter magnets of the OM10 and meter not switching off and draining the batteries on other models.
Going off topic slightly.....I wouldn't advise anyone to get the OM10 body..it has a basic design fault, which I found out the hard way:-the slider under the ASA setting knob can be easily moved off auto towards "B" which slows the shutter...this design fault was corrected in the OM20.

John Hermanson · Sep 16, 2008

Problem could be: old style cut plates (3 different types), bad manual speed board (dirty, corroded), bad trigger switch, bad A/M switch (oldest type are not gold plated) bad or chattering main switch, bad asa ceramic. Magnet position could be wrong. Oldest OM-2 (below serial number 300,000) tend to have more problems. John, www.zuiko.com

awaken77 · Sep 21, 2008

The problem disappeared itself after I switched off and on camera several times, and put it on the shelf for couple of days.
it looks like dirty/oxidized contact issue.

Olympus OM2 - manual shutter speed doesn't work

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