Power supply missing -5 output. Repairable?

[pc-twitchy]

According to my PS tester, my AcBel 660 isn't showing a light on the -5v line.

(This is following an overnight power outage)

Is this likely to be fixable? I can replace the PS, but not until Monday, so if I can repair, I will.

Thanks for reading

 

[Dark Lord of Tech]

It's normal for it to be missing the requirement was removed a few years back.
-5 VDC (this is optional on newer ATX-V2 supplies, it is for use with older AT class expansion cards can be and was omitted on most newer units)
http://pinouts.ru/Power/atx_v2_pinout.shtml
ATX 2.2 and later (ATX12V 2) is common ATX standard, 24 pin connector.

The −5 V output was originally needed since it was supplied on the ISA bus, however it became obsolete with the removal of the ISA bus in modern day PCs and has been removed in later versions of the standard ATX power supply.

Read more at http://powersupply33.com/atx-power-supply-pinout.html

 

[pc-twitchy]

Thanks for that comprehensive answer. It's a while since I retired from building and servicing PCs and I'd clean forgotten about that missing light.

I've just tested another PS that I had lying about - an unused Enermax ELT400AWT (same light configuration, of course)

I'd try this one as a stopgap but its GFX card power leads are only 4xpin while the AcBel's are 6xpin. The GFX card is an EVGA GTX560 Ti. Can I chance using this PS? I guess, at the worst, I could pull the card and use the onboard VGA setup.

LATER: My bad: I've just realized the modular Enermax PS has 6pin PCIe outlets, but the 6 pin to 6 pin cables must not have come with the main unit, as they're missing.

I guess I've answered my own question about the 4 pin PCIe connectors being useable - obviously they're for GFX cards with 4 pin connectors.

Cheers