At 08:10 PM 2/15/2000 , Tim Klymkow wrote:
>I have a ABIT BX6R2 motherboard in my homemade PC.  Everything has been
>working fine (months) until last night.
>
>The three fans (2 case, cpu) that are plugged into the motherboard have
>stopped working.  The PC itself stills works fine, but will freeze
>when the
>CPU temp gets too high.
>
>I have not been able to figure out what may have caused this to
>happen.  Can
>not find anything in the manual or ABIT's website.  Nothing in the BIOS
>seems to make a difference either.


Hi Tim

I recall reading (months ago) that some Abit motherboards (I don't
recall if the BX6R2 is one of them) are unable to supply enough
current to the fan connectors when large fans are connected. The
result is that the traces on the board that go to the 3 pin fan
sockets can burn out.

I do recall that the article that I was reading mentioned that some
large dual-fan CPU coolers were enough to cause this type of failure.
I would think that using several case fans (which are often 80mm in
size...compared to the 60mm size of most CPU fans) could be a problem.

I always use case fans with 4 pin (drive style) connectors that plug
directly into the power supply. The comments that I read scared me
into this general practice. If your case fans are still functional,
you can get 3 pin to 4 pin adaptors for $1.95 each at
<http://www.coolerguys.com/CPUCOOL/Ppro.htm> that will let you bypass
the motherboard and plug your fans directly into the power supply
using drive power cables. (You might need some power cable splitters
as well.)

Regards,
Bill

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