Well, I do not know the actual construction of the 'suspect' heatsink. Thane is way up north. I am way south and west of him. Snot like I got to put 'eyes' on the problem. I read here it was of the new "heatpipe" varieties. I have no experience with a "heatpipe" type HS yet. I still live in the solid metal chunk heatsink world. They are tough to fail, but I have read about trouble here too! But, I do understand the basic physics that a "heatpipe" plays with. So, I agreed with Thane that it seems that the HS is toast and needs replacement. I was not aware that the heatpipe's might have some sort of liquid as a transfer agent. I thought the current crop of heatpipes used solid tubes to transfer heat to the "radiator." No matter, whether liquid-filled or solid, if any of the "pipes" have broken with the base, the device is toast IMHO. Perhaps I am way off base. I can hang with that.
Best,
Duncan

At 01:16 01/31/2008 +0000, you wrote:
On 31 Jan 2008, at 00:08, Thane Sherrington wrote:

At 05:10 PM 30/01/2008, DHSinclair wrote:
OK.  I would support your guess. Makes the most sense. And, if the
fan is changing speed, the heat logic works.  Reads like new
heatsink to me.

It appears to have been the heatsink.  (I had another of the same
model lying around so I stole the heatsink from that.)

This might be a stupid question.. but...

How exactly does a heatsink, which austensibly a chunk of passive
metal... fail?
warping over time due to heat?

-JB

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