Karl, That is a very interesting tidbit of knowledge … makes sense … thank you! Andy > On Apr 23, 2016, at 6:01 AM, karl shah-jenner <shahjen@xxxxxxxxxxxx> wrote: > > Pablo writes: > > The cameras from the 80s (mostly Pentaxes; and Minoltas) are giving up the ghost.... > The shutter doesnt cock after winding, and I end up winding 5-6 frames before being able to shoot again > > that sounds a lot like the little electromagnet that holds the vertical travel focal shutter blinds in place - over time they get a little dust on the face or an accumulation of grime on the electromagnet or the metal plate the electromagnet is supposed to hold and it's *just* enough to stop the electromagnet grabbing and so the shutter cocking action failing to grab, allows the blinds to fire during cocking. A lot of techs used to tell people some story about the electromagnet needing replacing when often all they did was wipe it all clean with a solvent and hand it back to the customer :/ > > pretty common. The mechanical horizontal travel shutters might not have been as fast as the vertical shutters, but they were (are) a lot more reliable :) > > k > >
