Opcode Studio 3 down....need help!

[Gothboy]

I have 2 midi interfaces, an M-audio midisport 8x8 for all my hardware, and an Opcode Studio 3 for a separate computer that runs editor software for a Nord Micromodular synth. I haven't used the Micro for a few months(I've been learning about softsynths) but yesterday needed to fire it up only.....the Studio 3 won't turn on! Just all of a sudden won't work. I opened it up, the 1/4 amp 250v fuse and everything else looks fine but I can't figure out the problem. I get no lights on the thing. I removed the on/off switch and took it to Radio Shack to replace it to see if that might be the problem but they don't carry that size switch anymore.
I know.....studio 3s and 4s are cheap on Ebay but it would be nice to fix it myself if I could. Anyone else out there ever fixed one of these or had a similar problem? I have an ohm meter tester but I don't what to test when I get the top off.