need help with Rollei P66 autofocus 6x6 projector

Hi my name is Eric. I came here hoping to find someone who can help me. I was just given a Rollei p66 autofocus 6x6 projector. I think it needs a new fuse and the frame advance lever seems jammed. i tried to get under the cover but the screw seems stripped. does anyone here own this projector? anyone willing to help me get it figured out? thanks so much.

Eric