PSU Problem OCZ600SXS

[JohnMera]

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hi, ive just installed a new psu due to upgrading my gpu its an ocz600sxs and as expected all lights on board etc came on but when I pushed the power button nothing happened apart from the cpu fan started to spin but nothing else, ive put my old psu back in and its now working fine, I did notice that there is a white wire in the 24 pin connector in my current psu but its not there in the new ocz psu, could that possibly be why? im really stuck on this one
any help would be great
thanks J

 

[GhislainG]

The white wire on pin 20 is missing simply because -5V no longer is required. I presume the new ocz600sxs PSU actually is new to you, but not necessarily new since that's a pretty old design. At this point I'd presume the PSU is defective.