Intermittent(?) power-supply trouble

Hi everybody. Still working on those MIPS RISComputers. I've gotten all three to power-up and self-test at least once. The one that's giving me problems came to me marked "bad power supply." Not being one to believe the markings, I tried it, and it powered up fine, did the whole self test, and (due to the lack of any disks) just set there, as you'd expect. So here's the deal. I powered it off, and then back on. The second time, it didn't seem to be getting any power at all -- not even fan-buzz. Would I be right to suspect a loose joint or the like? Is there anything else that might cause the power supply to work sporadically? What's the best way to attack this and get the power-supply fixed? Should I just dig out a multimeter and start checking connections? Regards, Chris Christopher Smith, Perl Developer Amdocs - Champaign, IL /usr/bin/perl -e ' print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n"); '