atx power supply question.

jeffslot · Post by **jeffslot** » Thu Aug 03, 2006 5:47 pm

Hi guys,

I found this pinout on the web. It looks very usefull for my next project.

http://pinouts.ru/data/atxpower_pinout.shtml

What I'm wondering though is does the color coding apply to the non 20 pin connectors? IE. if a red wire is going to power a hard drive or a cd drive does that run on +5 volts? Thanks.

Jeff S

Post by **Skyone** » Thu Aug 03, 2006 5:50 pm

Yes, Red is always +5v, and Yellow is +12v on the molex:

jeffslot · Post by **jeffslot** » Thu Aug 03, 2006 5:54 pm

Thanks Skyler (I've already started the next project). I'm going to consolize my neo-geo. It's going to be fit into a computer case though.

atari2600a · Post by **atari2600a** » Thu Aug 03, 2006 5:59 pm

For a case that big, you might as well have a 10" LCD motorically* eject & rise out of it when you turn it on!

*motorically=some word I made up on the spot

jeffslot · Post by **jeffslot** » Sun Aug 20, 2006 4:47 pm

Hi there.

I've connected the green pin on my atx connector to the black next to it. My atx power supply sounds like it it trying to turn on, but it just doesn't get going (I'm hoping the powersupply isn't bad). Any advice? Thanks

Jeff S

timmeh87 · Post by **timmeh87** » Sun Aug 20, 2006 5:07 pm

someone told me once that certain power supplies wont work without a load. is your hardware hooked up to it?

Post by **gannon** » Sun Aug 20, 2006 9:13 pm

Doesn't the green just need a momentary connection to ground?

Adeptus · Post by **Adeptus** » Sun Aug 20, 2006 9:16 pm

Continuous, I think, not momentary

timmeh87 · Post by **timmeh87** » Sun Aug 20, 2006 11:07 pm

the power switch is momentary, but thats a function of the motherboard, not the power supply.

jeffslot · Post by **jeffslot** » Tue Aug 22, 2006 6:02 pm

Well,

When I connect the +5 to my mother board (and the ground) the power indicator on my motherboard starts up. Howwever, the fan on my psu still isn't spinning? Help. Below is where I got my atx info from. Thanks.

Jeff S

http://pinouts.ru/Power/atxpower_pinout.shtml

Adeptus · Post by **Adeptus** » Tue Aug 22, 2006 6:19 pm

Could be a dead fan... if it's supplying power then the PSU fan should be going.