Hi,

I think my mobo has gone , a Gigabyte GA-K8NXP-9 NF4 Ultra, ATX Socket 939 and I'm looking for a replacement.

I need to reuse my existing AMD 64 x 2 CPU and my DDR memory , so I can't just throw the whole darn thang away.

Cheers and hello  Here are 7 socket 939 motherboards.  I did not take time to verify memory type.  Thanks for those soybean, and the Jetway looked reasonable.  Unfortunately, I'm in the UK currently and Newegg don't ship internationally, as far as I'm aware.You're right.  Newegg.com does not ship internationally.  I'm not familiar with online sellers and retailers in the UK, but I'd bet you can find some if you do some searching.  Some of the members of this forum are in the UK, so they may be able to suggest sources there.I've looked around UK sites but I can't find a Gigabyte GA-K8NXP-9 NF4 Ultra, ATX Socket 939 .  If anybody Stateside could locate one, with an international shipper, I'll definitely put you on my christmas card list.  I just sent a PM (Private Message) to a forum member who lives in the UK.  His forum name is Calum.  I gave him the link to this discussion. 

You might take a look at ebay.  And, do you absolutely need that particular motherboard or would some other socket 939 board also be ACCEPTABLE?Other than Ebay, I am unable to find that exact motherboard for sale anywhere in the UK.
If another socket 939 board is acceptable, there are a fair few retailers who still stock them.
For example, Aria and Amazon have several models in stock.
Some other retailers do have some socket 939 boards, however they're not as good as your current one in terms of features.Thanks very much for that information, gentlemen, and I'll pursue a different board just as soon as I am certain that my existing one is dead.

If it is simply the CPU fan which has failed would that cause the mobo to shut down the PSU ?   My PSU works fine when it's disconnected from the mobo . That's what led me to believe that the mobo was at fault.

Can I test the CPU fan without stripping it out ? A failing fan will indeed shut the system down to protect itself.
Consult your manual on removal instructions or the CPU manuf. manual.
Then take the fan to a parts retailer in your area to match it up for a replacement.
Finally and important travel to Arctic Silver's website for proper instructions on re-applying thermal paste.

Hopefully a $10.00 new fan will get you back up and running...It's actually the stock AMD fan , which has been brilliant.  It came supplied with its own thermal coating which I cannot fault.

Can you tell me, if it was simply CPU fan failure, would the mobo show any sign of booting up before shutting down or would it just be lifeless, like mine ?

Also, if I can somehow contrive to apply the correct DC voltage to the CPU fan in situ, would that be an adequate test to see if it is faulty ?   I can easily disconnect it from the mobo pins, but I would need to OBTAIN a similar mobo fitting and the means to apply the voltage. What problems were you having that lead to posting your question here? 

Have you ever opened your computer case and observed what the CPU does when you turn the power on?  If not, try it.  Does the fan run for a few seconds and then stop, or not run at all?  Hi soybean, here's exactly what happened;

I switched on and the fan controller lights came up, as usual, but the screen was completely blank.
I jiggled all external connections to no AVAIL.
I then attempted to switch off via the reset button but nothing happened. The fan controller lights stayed up.
I then hit the on/off switch, also to no effect and so I pulled the plug.
When I reconnected the power and hit the on/off switch again there was nothing, not even the fan controller lights.

I took the panels off and reseated all INTERNAL connections, attempted to power up but nothing came to life.
Then I tested all PSU outlets and all were dead.
When I removed the PSU from the case and tested it with a PSU tester and voltmeter it checked out fine. It ceases to function when it is connected to the mobo.


Now, I've just managed to find a replacement, a KN8 PRO SLi, which differs from mine by just one PCI-E socket, but I really should try to discover what happened before I fit it , so any help gratefully appreciated.

Many thanks to the guys who PMd me with mobo sources.A PSU tester does not place the PSU under load...i'd suspect the PSU before i would buy a new MBoard.Well, I've got a new PSU, I've got a new mobo, I'm halfway to building a new machine, damit.   Lol.

Now it's been suggested that my CPU might have blown, so I'm no better off than I was three days ago.   The answer SEEMS to be something like this, I'm told, although it looks like just a jig to me;
http://www.driverheaven.net/reviews/Tech%20Work%20Station/

Can anybody tell me if they're available in the UK ? patio;
Quote

A PSU tester does not place the PSU under load...i'd suspect the PSU before i would buy a new MBoard.