Yesterday I bought an old Amiga 2000 PC. The power supply is shot. When I first powered it up not even the fan turned. At the third try the fan suddenly turned, intermittently. Each time I hooked up a load (tried a 1.2 GB HD) smoke rose. There is a hard yellow mess on several components, all over the board, it's impossible to tell where it came from (not near any openings). After we removed some of the stuff (mostly from a cooler) I got about 3 to 9 V fluctuating on the 12V line and no smoke. Several tries later I was at 7 to 9V. The fan got faster, then slower again in cycles of a few seconds (maybe 10), along with the voltage jumps. Hooking up an older 130MB HD got me a faster fan and consistent 9.15 V on the 12V line, but the disk doesn't spin up.
Have you got any idea? I'm not really into electronics, and I'm aware of the fact that there are quite strong capacitors inside such a power supply, but if there's any chance I'd like to fix it.
