AT PSU Power_Good / Pinout

[scott]

I am trying to "Rig" up an old At Power supply for some 12V duty. I can't find a pinout diagram for it. It is the "newer" style AT with the switch attached to the cord that goes to the case front.

Can I Jump the power good wire to get it run ? If so which wires ?

Thanks

Scott

[GrayFox]

Flip the switch that goes to the front of the case.

[scott]

On an ATX PSU you jump the green Power_Good wire to a nearby ground and it will run on the bench. This is what I am trying to do.

I need to Know which is the Power_Good pin and what to jump it to. Gnd. ? voltage ? etc.

It does not run if you just push the button.


Scott

[Tex]

If its a atx then jump the only green wire to the black right next to it

[profdlp]

You may just need to put a load on it. Check out the last paragraph at this page. (http://documents.epanorama.net/links/psu_computer.html)

A link from that page leads to a circuit diagram (http://home.tiscali.be/decoy/Electronics/at_ps.pdf) which may be useful.

I'd try hooking a couple HD's and maybe a few case fans to the PSU, then check each lead with a VOM.

[Tex]

Wow. I do the green wire to ground and have never had one not turn on for a standard atx psu.

Weird.

Tex

[scott]

I had several of these on the shelf. I got another one and it worked by just pushing the button. Cool

So I tried Profs suggestion and hung a huge 120 x 38 sunon fan on the one that would not run and VIOLA she runs. So Prof gets the prize ! ( To be determined at a later date ) ( No not "That" kind of date )
Thanks Prof !! :thumbsup:

Tex

These were AT not ATX PSU's Remember them?


Scott