I'm just as stumped as you are. In my '86, I do recall there weren't many fuses. There were breakers behind a cabinet door on the left side of the coach just in front of the couch, near the floor, but I don't remember any fuses in there. I also don't remember a converter box with fuses like the newer units have.
One suggestion besides flipping the breakers: Unscrew the light fixture from the cabinet and see if the wires are attached correctly. If one is disconnected, all the items affected by this may be wired together, so having a break in the system would cause the other things to go out.
I don't think there's a fuse in the hood vent, but it wouldn't hurt to pull the screen down just to make sure.
2007 T-286SR Cherry/Granola, #6236, original owner, current mileage: 9467.8 (as of 5/26/19)
1997 T-2653 Blue Denim, #5471
1979 12 1/2' MC, Beige & Avocado, #4639
Past Sunlines: '97 T-2653 #5089, '94 T-2251, '86 T-1550, '94 T-2363, '98 T-270SR