Strange, really strange.... The 2s (and others, OM-10 and later models) uses
a different kind of clutch in the wind mech -- a sort of friction device that
can sometimes break. With loose parts inside, it may grab one way but not
the other. Or, as you've suggested, there may be some other loose part loose
inside, but the reliable nature of the problem makes that less likely --
after a while, you'd expect a loose part to migrate somewhere else where it
doesn't do that. This is the sort of trouble that keeps this job
interesting!
Chuck Norcutt wrote:
> I think the "directional aspect is not only unusual but key to this
> problem. I removed the bottom cover and checked the levers. The
> potentially suspect one is not blazingly quick and perhaps needs
> cleaning but I don't think it's at all related to this problem.
>
> I'll reiterate that with the camera pointing up or forward the wind
> lever works normally 1000f the time. With the camera pointed down or
> upside down the wind lever works 00f the time. If the wind lever will
> not wind simply rotate camera to appropriate position and then it will
> wind normally provided you first release any pressure on the lever.
>
> I also discovered that, if the camera is pointed up, the wind lever will
> wind normally but the lever will only return half way before it gets
> blocked by something. Return camera to facing forward position and wind
> lever will return the rest of the way.
>
> The behavior is as though there's a small pin or screw floating around
> inside which manages to block a gear or linkgage when it's in the right
> position. However, I can't see any such thing with the bottom cover
> removed which implies something at the top. Given the additional
> problem of not being able to fully return the wind lever when the camera
> is facing up it would seem that perhaps the detent mechanism that holds
> the wind lever in the half cocked position is somehow involved. When
> the wind lever won't return it is in exactly the half cocked position
> where there is normally only a slight detent.
>
> Have I made the first discovery of the "out of control detent mechanism"?
>
> Thanks,
> Chuck Norcutt
> Woburn, Massachusetts, USA
> ---------------------------------------
>
> Clinton said:
> The "directional" aspect is unusual -- could also be that a spring is
> unhooked. You might want to remove the bottom cover and look at the
> short lever behind and next to the battery chamber -- it should have a
> rather heavy, short spring hooked to it. It (the lever) works the black
> lever that gets sticky (above). With the camera wound, the black lever
> should move quickly when moved. If it's slow and sluggish, it's got to
> be cleaned.
>
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