[rescue] Ultra 1 CPU fans and heat load?

Bill Bradford rescue at sunhelp.org
Thu Jun 7 16:03:12 CDT 2001

Just do what the Sun SE/FE did that came to fix my funky U1
fan - take the power connector from the existing fan, take a
normal widely-available PC-processor fan, and splice the power
wires.  The replacement fan actually isnt available from Sun
anymore, or is way backordered.  The replacement fan he put
on my U1 motherboard works fine, and is much quieter/blows harder
than the original.


On Thu, Jun 07, 2001 at 04:53:29PM -0400, Loomis, Rip wrote:
> Okay, so the U1/170E that I recently obtained sounded
> like hell with the cover off...sometimes.  After investigation,
> I discovered that the CPU fan assembly had a cheap
> little fan in it that seems to have bad bearings, and will
> occasionally stop altogether.  This would seem to be
> A Bad Thing.
> The other U1s we have here all have just a plain old
> heat sink--from looking at the online FEH it looks as
> though I need:
>   540-2761	UltraSPARC Fan Assembly (discontinued 5/97 - 6/97)
> or I at least need to replace a really really thin 12VDC
> fan.
> Anyone have any ideas as to a cheap fix?  Can I get
> away without the fan at all, but with the existing heat
> sink (which is smaller than those on the systems which
> don't have fans and use only passive cooling)?
> Anyone know of a place with a wide selection of small
> fans that I can order a replacement from, either on-line
> or over the phone?  Fan dimensions (don't have a
> metric ruler handy although I suspect that would be
> more appropriate) are nominal 2"x2" by 3/8" thick,
> with the (4) corner screw holes 1 5/8" apart.
> Thanks in advance--
> --
> Rip Loomis
> Brainbench MVP for Internet Security
> http://www.brainbench.com (Transcript 1923411)
> _______________________________________________
> rescue maillist  -  rescue at sunhelp.org
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Bill Bradford
mrbill at mrbill.net
Austin, TX

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