Power supply headache

[nize123]

I have a Compaq Professional Workstation 5000 in my home office. It works fine, but I would really like to get a new - quiet - power supply, the fan on one I have now makes a lot of noise. Problem is, I need to know if the machine (the power supply) is AT or ATX (or something utterly different the Compaq way) compliant...but not even Compaq have been able to answer this. The supplier I'm thinking of buying my new silent power supply sells only ATX, so I'm hoping for that. So - does anyone know which type it is, or, at least, how to find out about it?

Help would be very much appreciated...

// nize

[YODA74]

Un hook the PSU from the Mother boardand see if it fires up?? if it starts it's an AT if it does not it is an ATX.

ATX PSU will not fire up unless it's hooked to the MOBO.

[nize123]

Thanks, I'll try that.

// nize

[Alejandro]

Best way to know would be to take the PS out to the shop and compare it to the one they sell.
In my old Pentium 120 Compaq there's a PS that behaves like an AT (hooked directly to the power switch) but the shape is different from standards, so a normal PS won't fit it the case.

[YODA74]

Thats probobly becouse it's a slim line, why go thru all the trouble of taking the PSU to the shop?? If you can't tell by turning it on then look at the connectors AT has two p.c.that attatch to mobo ATX has one.;) If you want to get a new that will fit the form factor then measure it.

A tower AT usually won't fit in a desk top AT one's full one's slim

[mjc]

Actually I think most Compaq power supplies are done the "Compaq way", meaning they are not standard. They may be AT or ATX or even something else (NLX or something) but often they don't have the proper dimensions
so you need to use a Compaq replacement of find one that will fit, and usually that means it is not the highend quiet ones.

One other option would be, if weverything is working properly, to just replace the fan...a good quiet ball-bearing fan can be had for around $10 and it would be a rather easy replacement (normally I don't recommend replacing PS fans but....)

[nize123]

Thanks. I guess I'll have to measure the little sucker. This is clearly not as easy as I thought at first; out with the old PS and in with the new...
Are there any special considerations that come in to play when replacing the PS fan? I'm no electrician... : )

// nize

[YODA74]

You might beable to find what you need here???

http://www.compaqrepair.com/powersupply/index.html

And if your going to replace the fan just becareful of what you touch the PSU still holds enough charge to do you some serious damage?? But it is pretty straight forward.Once you open it up and look.