So My //c just up and quit on me a few weeks ago. Would have gotten to it sooner, but I had to replace my multimeter. However, now that I have one again, I was able to trace at least part of the issue to a partially blown fuse in the power supply. It's not completely blown, as I do get some continuity across it, but there's a lot of resistance and it was only putting out about 0.2 volts.
The good news is that I was able to get it open and I know where to get a replacement. I've temporarily jumped the fuse, and it was putting out about 17 volts. Then I accidentally shorted something, and now I'm getting about 1.5. It's not really a problem though, as the transformer seems fine, and there are only about six components to replace (fuse included). And worst-case scenario, even if I can't rebuild it, I can always replace it with a modern 15 volt supply, and splice in the correct connecter.
The bad news is that the fuse at F1 on the motherboard is also blown. And I mean completely. Unfortunately, the thing's a little too small for me to make out any markings, so I don't know what to get as a replacement. I would very much appreciate it if someone could tell me what I'm looking for. Also, if anyone out there has had a similar malfunction, are there any other problems I should be on the lookout for?