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 Glue�) 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 .
