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Author Message   Spdtwn Tinkerer Username: Spdtwn Post Number: 24 Registered: 09-2007 Rating: N/A Votes: 0 Posted on Monday, March 12, 2012 - 09:51 pm:    If the shutter release button depresses,and the camera winds on but the blades don't open even after cleaning you may have a problem which occurs on compur shutters of that type. It lies in the M-rechen escapement. That is the M-flash delay mech. Remove the front speed plate and take out the self timer esc...1xscrew. Make sure the blades are free. The area you are looking at is between the release arm and the main spring..an esc with a spring loaded latch arm..within this little group is a cam with a lever resting on it. This is the troublesome part! the cam acts like a honing stone and puts a sharp edge on to the lever's bearing surface which digs in and prevents the esc. releasing the shutter. You have to remove the relative parts, take a real stone and hone off the sharp/cutting edge on the lever. A smear of moly grease on the bearing surfaces is good. While you are at it, take your stone lightly around the cocking ring, it gets sharp edges too, maybe wash out the s/t esc & a dot of fine lub. on the pawl. Hope this make sense!