Sup guys - I have a spare psu that I would like to use for testing things or to power up drives/fans while outside the case. It's a standard 350W P4-compatible psu. How can I turn it on outside the case, wichout having it connected to a mobo? There's no on-off switch is why I'm asking, like on older psu's. Can it be done?

Thanks!

Take a short piece of wire, stick one end in the pin for the green wire, and the other end to any black wire.

Connect these two pins together.

Yep do that, or if your like me you have one of those old PSUs sitting around that actually have an on/off switch

I tell you what - the Overclocker's Club forum never ceases to amaze me. Fast, accurate, friendly responses. I Just tried it and it worked perfectly. Thanks so much guys!!

I thought there was a power supplie tester you can buy?

There is, but he wants to use it "AS"a tester to test fans, lights etc.

My power supply has an on-off switch on the back but it still is dead. Will shorting out the black and green wires work for me also?

Yes.