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Re: [OM] Dead OM-4 ?

Subject: Re: [OM] Dead OM-4 ?
From: wayneharridge@xxxxxxxxxxxxxxx
Date: Thu, 22 Mar 2001 12:25:15 +1100
Clint wrote:

> If it's not a loose screen, it's very possible, perhaps even likely,
> that either the lens or camera will be damaged by forcing the lens off. 
> (BTW -- did you mention what brand of lens you've got?  This is rare
> w/Zuikos, but not impossible.)

Silver nose Zuiko 135mm f3.5.

> If it's the index arm on the back of the lens that's on the wrong side
> of the coupling ring, note that the ring is made of plastic and will
> break before the metal arm on the back of the lens (unless you get lucky
> and it happens to slip back over instead of hanging up).  But the
> aperture arm in the camera is stamped metal -- if it breaks before the
> aperture stop-down lever on the back of the lens, woo-hoo!  Major repair
> bill!
> And, yes, if you can get the shutter to stay open on "B", you CAN see
> most of what's going on inside there -- I've done it dozens of times. 
> Try winding very quickly (instead of slowly) with your finger on the
> release button -- doing it slowly may allow the shutter to release
> before the B-lever engages to hold it open.  Try it several times before
> giving up, too.

Will do.

> The last method of holding the shutter open involves some risk so I
> hesitate to to suggest it, but you might try this: do the slow wind/
> shutter on "B"/ finger pressing on release button routine, but this time
> as the curtain bar gets to the right of the focal aperture in back (the
> rectangle where the photo is "taken"), _gently_ rest a finger on the
> metal bar as it exits.  Then, when the curtains begin to travel, gently
> restrain them and carefully allow only the first curtain to travel --
> hold the second curtain back "manually".  Now you can see inside the
> back.
> The risk is that, by allowing "slack" in the curtain strings at either
> end of the curtains, they may slip off their rollers.  If they do, the
> curtains will be askew or buckled, requiring removal of the front
> casting for repair.  That's easier than replacing the aperture stop-down
> arm on the body, but not as hard as replacing the aperture ring -- it's
> your call either way.
> BTW -- your neighborhood camera store/shop may have no idea what needs
> to be done -- try to find an Olympus specialist, OK?

The repair place I use are pretty good with OM gear - so far.

Many thanks for your your detailed info.

...Wayne


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