I recently acquired a used PCP80 slide projector, but the magazine lock knob seems to be stuck and I cannot mount a slide tray on the projector. Does anyone know of any possible reasons for this. I couldn't glean anything obvious from the manual. I was going to attempt to take it apart myself, but thought I'd ask the question first, just in case anyone has encountered this situation and there might be an easy solution.
Taras
Taras