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Author Message   Jesse Tinkerer Username: Jesse Post Number: 9 Registered: 08-2006 Rating: N/A Votes: 0 Posted on Saturday, January 06, 2007 - 07:36 am:    Hi I have a SMC Takumar M42 lens, 3.5/35mm, and the diaphragm is jammed. The aperture ring moves and clicks in but the iris does not respond. Also, it's locked in auto mode and can't move it to manual. In auto mode the aperture pin does not have any effect while the diaphragm is jammed. The annoying thing is that yesterday I managed to move it to manual mode (only once) and then diaphragm worked. Moved it back to auto and back to the same problem. Have not been able to move it back to manual again. Glass is excellent and cosmetically like new so hope it's not a case of having to bin it! Any help appreciated, regards jess..