How can I fix an intermittent ground screw in an OM-1(N)?
TO REMOVE THE TOP COVER 0) Set the ASA to 100 and LEAVE it there. Do not move it until after the top is back on. 1) Remove the rewind knob: This was actually a little tricky, as I did not know how it was supposed to come off. The book just said unscrew it. It took a little time but I finally worked out that the whole knob just unscrews from the shaft, exactly what the book said…. You need some sort of implement to stop the shaft turning while you unscrew it. Don’t use pliers as the rewind forks bend very easily. I ended up cutting a chop stick to fit as close as possible to the shaft, and avoided placing much pressure on the forks. There is a small screw in the centre of the rewind knob. John H mentioned that this should not be touched. 2) Remove the wind lever. There is a black trim plate glued to a pin-faced nut that is then attached to the top of the lever. Using pin pliers it is possible to unscrew the entire assembly holding the lever on, but this will damage the black plate. I
