[rescue] Replacing CPU cooler fan on ultra 1
jonathanjg at wo.co.za
Sat Jul 16 04:56:35 CDT 2005
Mike Nicewonger wrote:
>Every Ultra 1 I ever saw with a fan on the CPU had the 'fifth' screw.
>What I've done is replace the fan with a similar sized one off of a
>PeeCee heatsink of some sort. Just remove the 4 screws then remove the
>fan. Then just slide the replacement into place and leave the 5th screw
>where it is. I just rebuilt the fan setup on 4 U's I will be putting
Great idea, I think your way is better than mine.
My original thoughts were to just leave the broken fan in place where it
was and add another big fan on top of that above the plastic shield.
This should have (a) extracted the heat anyway (b) the airpressure
should have made the broken fan spin.
However, what I didn't take into account was that the cooling of the
cache control chips might be weaker:
>That plastic cover channels air toward the heatsinks on the cache
Isn't it strange that the original Sun designers didn't seem to want to
take into account common component break down - cooler fans will
eventually breakdown, NVRAM batteries will go flat....
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