defreib,
Did you get to get this nipped in the bud, and if so, what did you end up doing? If not, PLEASE BE CAREFUL. If you're not 100% sure you can be extremely careful with opening that power supply, then just go and buy a new one. You can get a good one (so long as you don't need something like 600 or 700+ WATTs for $30 to $50 on NewEgg.com - maybe even a little less after mail-in rebates, currently.
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"If to err is human, then I must be some kind of human!" -Me