Re: b/w

[karl shah-jenner <shahjen@xxxxxxxxxxxx>]

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