> > NB: a ATX supply needs to be 'switched on' from a signal on the board.
You
> > might well find that the 5.0 V will draw ~0.0 mA because the 'switch'
> > signal is not on. There ususally is a jumper connection of the board
that
> > must be shorted for a moment to switch 'on' the supply.
>
> I'd like to find that.....

I've a feeling this is/was in an assembled PC. Therefore there should be a
bunch of wires running from the front panel of the machine. They're usually
in pairs and will be things like the power LED, the HDD LED, the reset
switch and the power switch. What is being refered to above is the power
switch which will attach to the motherboard with a jumper like connection.
The cable might have some label on it saying this is where it goes and the
motherboard may also have this written on it. The motherboard manual is
always the best way to identify this and can usually be downloaded off the
web if you can identify the board manufacturer and model.

If you test each of the power supply rails for shorts and don't find any
it's probably safe to try powering up.

Good luck :)

RP

-- 
Author: Richard Purdie
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