On 31 Jul 2002 at 16:53, Mark Roberts wrote: > Common problem with the A50/1.7. The aperture ring is plastic, rather than metal > as on the A50/1.4, and it wears readily. Also the springs that tension the "A" > button sometimes break off. They can be reattached, but it 's a bit tricky and > takes some creativity.
I too had this problem occur with one of my lenses, the little metal leaf springs have a hole at their bases and that are held in place by a plastic spike on the aperture that has been melted. This joint fractures and then there is no material left to allow it to be re-attached. What I did to repair mine was to clean all the lubricant from the area with spirits. And then use a slow setting epoxy glue to re-attach the spring making sure that no glue fouled the rotating parts of the mechanism. I'd stay away from cyanoacrylates (ie Super GlueŽ) as it can foul surfaces whilst curing. Cheers, Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications.html - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
