I'm in the same spot. The machine in the basement of the church has come apart, I've created the swastika, put in the machine, hit the lever, and nothing. LOOKING at the control panel suggests that a fuse is blown, but I've tried sticking every metal piece I own into the panel with no luck. Honestly, what do 1940's British fuses look like? I can't leave, there's nothing else on the beach, nothing in the desk, and there's nothing else in the water. I've also messed around with the "mound" until the damn thing has started to look like the head of Cthulhu.
Anyone have any suggestions?