HP PSU Pinout

[Terry]

Hi,

I have an HP Pavilion XE763 that a friend gave me that won't power on.
My first instinct is to check the PSU, but the ATX connector is weird.
One pin has no wire, another pin has two wires, and there is a three
wire connector marked as "FAN-C" that plugs in to what looks like a fan
header on the mobo.

Does anyone have the pinouts for this power supply, or know if a
standard ATX PSU can be made to work, if only for long enough to see if
the HP PSU is dead?

Thanks
Terry

 

[Pen]

Hi,

I have an HP Pavilion XE763 that a friend gave me that won't power on.
My first instinct is to check the PSU, but the ATX connector is weird.
One pin has no wire, another pin has two wires, and there is a three
wire connector marked as "FAN-C" that plugs in to what looks like a fan
header on the mobo.

Does anyone have the pinouts for this power supply, or know if a
standard ATX PSU can be made to work, if only for long enough to see if
the HP PSU is dead?

Thanks
Terry

Pinouts here. The power supply is only 90 Watts, but is a
standard ATX pinout.

http://h10025.www1.hp.com/ewfrf/wc/...t=60633&lang=en&cc=us&docname=bph07169#N10953

 

[Terry]

Thanks for the link.

Pinouts here. The power supply is only 90 Watts, but is a
standard ATX pinout.

http://h10025.www1.hp.com/ewfrf/wc/...t=60633&lang=en&cc=us&docname=bph07169#N10953

 

[kony]

Hi,

I have an HP Pavilion XE763 that a friend gave me that won't power on.
My first instinct is to check the PSU, but the ATX connector is weird.
One pin has no wire, another pin has two wires, and there is a three
wire connector marked as "FAN-C" that plugs in to what looks like a fan
header on the mobo.

Based on the pinout Pen provided, it is standard ATX.
It is not uncommon for an OEM PSU to simply omit a wire or
two for voltages a modern system does use anymore (like -5V
or -12V). Having two wires on one pin is typically done to
remote-sense the voltage and that is done on any good power
supply.

The 3 wire fan connector is optional, usually does not
"need" to be connected at all for proper operation of the
system.

Does anyone have the pinouts for this power supply, or know if a
standard ATX PSU can be made to work, if only for long enough to see if
the HP PSU is dead?

Check it just as you would any other standard ATX PSU.
If it has the same external casing dimensions as ATX PSU,
yes you can use a (different) stadard ATX PSU. This is
going by the link Pen provided and considering the details
you supplied. If it is not using the standard ATX 20 pin
motherboard (plastic) connector then supply more details
about it.

Turning such a PSU on is done by shorting the PS-On, pin 14
(usually a green wire) to ground while a load (like an old
hard drive) is connected. At that point the fan should spin
and voltage readings can be taken with a multimeter.
http://69.36.189.159/usr_1034/atx_on.gif

 

[Terry]

It has a small casing, so a standard size PSU won't fit. The ATX MOBO
connector is a standard 20 pin tho. I've tried jumping the PS-On to
Ground, but nothing happened.

I'll be digging out a working PSU to test the system this weekend.

Thanks for the reply
Terry

 

[kony]

It has a small casing, so a standard size PSU won't fit. The ATX MOBO
connector is a standard 20 pin tho. I've tried jumping the PS-On to
Ground, but nothing happened.

I'll be digging out a working PSU to test the system this weekend.

Thanks for the reply
Terry

Smaller casing could still be one standard, mATX?

There was also another casing size they often used that had
two dimensions the same as a full ATX but it was shorter.
At the moment I don't recall the name of that form-factor.

If you can find a good picture of one of those online (an
open system perhaps) and link to it, we can probably ID it
better.

 

[Terry]

I believe that it's mATX.

http://www.apactonline.com/images/powersupply/ps-matx1.jpg

That's not the exact one, but looks exactly like it. There are
replacements on Ebay that are relatively cheap, but I'd like to make
sure that it is in fact just a PSU problem before I put any money down.

 

[kony]

I believe that it's mATX.

http://www.apactonline.com/images/powersupply/ps-matx1.jpg

That's not the exact one, but looks exactly like it. There are
replacements on Ebay that are relatively cheap, but I'd like to make
sure that it is in fact just a PSU problem before I put any money down.

Yes you have linked to a mATX, more specifically a mATX-L
because it mounts on the (L)onger side. Be careful about
"cheap" ones on ebay, you might be as well off buying a good
name-brand new stock from a major retailer like
http://www.newegg.com

Name-brand is often more important than "supposed" wattage
rating too, as only a generic that's over-rated will tend to
claim more than about 220W capacity. More accurate rating
of what can fit in an mATX casing is about 180-200W.

 

[Terry]

Thanks for the warnings, I'll be sure to keep it in mind. If everything
goes according to my plans, I'll be taking the "guts" out of the HP case
and putting it in a custom case, since this will most likely be in my
living room as a dvd/avi/mp3/etc. player.

Thanks again for all the help, I really appreciate it

 

[Skeleton Man]

I believe that it's mATX.

Yes you have linked to a mATX, more specifically a mATX-L
because it mounts on the (L)onger side. Be careful about
"cheap" ones on ebay, you might be as well off buying a good
name-brand new stock from a major retailer like
http://www.newegg.com

I had a nightmare trying to replace one of those !! Every PSU I found was the
same dimensions but mounted on the short side ! I gave up in the end and
switched to a standard ATX case..

Regards,
Chris

 

[kony]

I had a nightmare trying to replace one of those !! Every PSU I found was the
same dimensions but mounted on the short side ! I gave up in the end and
switched to a standard ATX case..

Are you sure it was a standard mATX then?

There are quite a few at newegg, for example;
http://www.newegg.com/Product/Product.asp?Item=N82E16817104999
http://www.newegg.com/Product/Product.asp?Item=N82E16817104904

 

[Skeleton Man]

I had a nightmare trying to replace one of those !! Every PSU I found was the

Are you sure it was a standard mATX then?

There are quite a few at newegg, for example;
http://www.newegg.com/Product/Product.asp?Item=N82E16817104999
http://www.newegg.com/Product/Product.asp?Item=N82E16817104904

It was a cramped little Gateway PC, so it may have been propriety I suppose..

Newegg was of no use to me in Australia, and is still no use to me here in
Canada as they don't ship outside the USA..

Regards,
Chris

 

[kony]

It was a cramped little Gateway PC, so it may have been propriety I suppose..

Newegg was of no use to me in Australia, and is still no use to me here in
Canada as they don't ship outside the USA..

Ironically enough I was just inside a Gateway miniTower
today, think it was a Celeron 400 box before I refitted it
with an o'c Tualatin combo and threw another exhaust fan on
the top rear. It looks like (probably identical to) the one
in this picture;
http://pc.watch.impress.co.jp/docs/article/990105/gateway2.jpg

Can't say for sure what yours needed but the following looks
compatible with the Gateway here & linked above;
http://www.newegg.com/Product/Product.asp?Item=N82E16817104981

The original GW PSU also had a tab, arm,
whatever-you-want-to-call-it stamped out of the PSU casing
itself that extended towards the front of the case and
screwed onto a bracket that slides on from the side under
the floppy bay, but fortunately the case frame is pretty
thick metal and the rear case wall can easily support a mATX
PSU without needing that bracket.