Dead GC?

I was using the Action Replay SD slot hack to run GCos and I took the case off my gamecube in order to fit the disc.

The backup was totally hit and miss, it loaded 1/6 times.
So I adjusted the POT ever so slightly, and it worked like a dream.

So I was trying to get a pal backup to work on my NTSC console, but the video wasn't looking right. I tried NTSC, PAL, and both were crap. I tried PAL60 and the GC basically froze.


So I restart it and...the disc drive doesn't work.
Not only that, but I get no video. The fan spins though. I'm afraid I've burned something out @_@

It might have been the pal60 thing, or since the case was open, something may have shorted and I didn't notice.

Is there a fuse in the Gamecube that might have popped?
Or did I fry it?

I know I can buy another one (which I will if this falls through), but I'd rather not waste the $ if this one can be salvaged.

Any help is appreciated.