Put a load on +5v rail maybe?

I have tried that on all rails but it doesn't work. Must be something else, any ideia :\

You could try shorting the orange wire to a red one. It helps to protect the unit if you have some load on the 5 and 12V rails such as a fan and a drive.

http://pinouts.ru/Power/MotherboardPower_pinout.shtml
http://en.wikipedia.org/wiki/Power_good_signal

Maybe the supply doesn't work?

smeezekitty wrote:

Maybe the supply doesn't work?

It does work, only when a motherboard is connected to it.

Auzner, connecting the POWER GOOD wire to the 5 volts didn't work either. This power supply is really awkward, it uses all the wrong colors for the wires, blue for 12v, yellow for -12 and white for POWER GOOD.
I did manage to power it up without a motherboard though, by connecting two huge 10W 5 Ohm resistors in series as a load between 5+ and ground, these resistores are really huge like 6 cm long and get a bit hot. You might think 10 ohms (5+5) might be a bit low but the next resistor i have is a 16 ohm resistor and that's already not enough to trigger the psu on. They get hot and together they draw about 470 mA so i still have 19,53 amps on the 5v rails to waste.
Quite a oddity this power supply heh..