A few years ago a friend ran a camera shop. From time to time someone would come in with an SLR that wouldn't behave (long exposure, no exposure, nothing in viewfinder). He'd take it, tell them to go away and come back in an hour, then hit it on a telephone directory. 9 times out of 10 that would free the stuck/sticking mirror and everything would be fine. He had to tell the customer to go away, though, so they didn't get agitated seeing him bash their expensive SLR around
A few years ago a friend ran a camera shop. From time to time someone would come in with an SLR that wouldn't behave (long exposure, no exposure, nothing in viewfinder). He'd take it, tell them to go away and come back in an hour, then hit it on a telephone directory. 9 times out of 10 that would free the stuck/sticking mirror and everything would be fine. He had to tell the customer to go away, though, so they didn't get agitated seeing him bash their expensive SLR around
I suspect people hand their parcels to the post office with the same care, blissfully unaware of what their parcel is about to go through.
In the Navy, we called it “mechanical agitation” it raised fewer eyebrows than “I hit it with a wrench and it started working again.”
American components, Russian components, all made in Taiwan!
I haven't needed to use it since....
last Tuesday