PSU bench power supply
My PSU appears to have blown up over the christmas holidays- it was a bit unreliable before, but now it won't boot up my computer at all. I replaced it with a spare from work which works fine, so I now have a not-working 400W PSU I'd like to make a bench power supply from, that will hopefully kick-start my desire to get into microcontroller programming.
Does anyone know what the chances are that a broken PSU (no sign of magic smoke, it just doesn't power my computer any more) will still be working enough to use as a DC power supply? If it is, the 'Ibles sometimes disagree- what is the accepted way of keeping it turned on (short a pair of wires, attach a resistor across a pair etc)? It's a 20-pin connector with square 4-pin aux and the usual complement of molex.