Home-built Computers Re: Strange graphic card problem

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Subject Author Date
Re: Strange graphic card problem Paul 08-16-07
Posted by Paul on August 16, 2007, 5:57 pm
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Steve Pearce wrote:
> Daugher says her computer isn't working, LCD monitor displays nothing
> not even during boot-up. I open up the box and notice that the fan on
> the Nvidia 5900XT isn't running. So I suspect the graphics card. Take
> the card and put it in another computer...it works fine. Put it back
> in the original computer...nothing. So I change the PSU. Computer
> fires up perfectly, close the box and give the computer back to my
> daughter. She plugs it in and says it still isn't working. I open it
> up, power it up and the same fault...the fan on the graphics card
> isn't turning.
>
> The LCD monitor I was using to test and get it working was not the
> same as my daughter was using. My first thought was that her monitor
> had blown the PSUs, since I had to change the PSU to get it working
> again and the fault reappeared after plugging in her monitor. I check
> all the voltages on the ATX connector, they are all correct. So on
> the face of it the PSU is OK.
>
> At this point I'm baffled. Id appreciate any ideas from you good folks
> out there.

Maybe you could use a Zalman VF700 and just replace the cooler ? The
www.zalman.co.kr site is down right now, for a web server upgrade, so
I cannot check the compatibility list.

What you'd do, is plug the Zalman into a motherboard header, and
if there is some electrical problem with the power path to the fan
header, that would bypass it.

http://www.sharkyextreme.com/img/2004/10/value_guide/gf_5900xt_1.jpg (5900XT)

http://images10.newegg.com/NeweggImage/productimage/35-118-116-02.jpg
(VF700-AlCu)

I'm just guessing that the two would work together, and the video card
list on the Zalman site is where you want to look for a definite answer.
The heatsink is about $27. The fan has ball bearings, and that could give
it a longer life than a sleeve bearing fan. You don't have to install
the RAM heatsinks, and they are a bit fiddly anyway. The RAM sinks use
thermal tape of some sort, and it helps if the RAM chips are super-clean,
and the tape is warmed slightly, before application. You don't want a
RAM sink falling off, while the computer is running.

Paul

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