The main shutter gears (which are right there, just to the left of the
circuit board) ride on 44 - 1mm ball bearings. They're supposed to be
lightly lubricated. Naptha will wash the lube out.
As I said there were many causes of shutter lock. One cause can be the
metal plate at the front of the mirror box floor. The underside of the
plate (left hand side only) should have a small piece of electrical tape
on it. Plate comes very close to the gold trigger switch posts on the
main board. If plate does not have the insulator and touches the post,
shutter may lock up. Also, the circular circuit board which runs around
the meter housing should have a clear insulator on top of it.
___________________________________
John Hermanson
Camtech Photo Services, Inc.
21 South Lane, Huntington NY 11743
631-424-2121 | Olympus OM Service since 1977
http://www.zuiko.com | omtech1 AT verizon.net
Manuel Viet wrote:
> Le jeudi 16 Novembre 2006 20:12, Manuel Viet a écrit :
>
>>I finally got to the very bottom of things, peeked a look at the board,
>>everything seems in order, put back the floor, and tried... and tried...
>>and it doesn't lock up anymore.
>>
>>That's frustrating - I didn't do anything, and I don't know if it'll last,
>>but it looks like at least I'm going to try a couple of rolls before giving
>>up that body.
>
>
> Right... so after a period of grace, the bugger began to lock up - again -
> randomly, at increasing frequency. I figured that removing the bottom had
> moved some cruft around, but that it went back. So, a bit out of frustration,
> I admit, I re-opened the floor of the mirror box, basically flushed
> everything mechanical inside with naphta, dried it in hot air (not directed
> on the curtains), and put it back together. At the moment, surprisingly, it's
> working. I'll put a roll in tomorrow, and be it. If it fails, I'll shelve it,
> end of the story. Thanks to all for your advices,
>
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