Lan Barnes wrote:
[snip]
This is an interesting construction. The spring that holds the heat
transfer pad to the CPU has three (my hand to god) copper tubes running
from it to a comb-like radiator that the fan forces air through. I figure
the tubes are empty and just transfer heat by conduction. But it looks
like refrigeration tubes.

Because I losened the spring clamp, I figure the pad lifted and the grease
contact was broken ... needs refreshing.


What you are describing is a heat pipe. See this article in Wikipedia to see how they work. <http://en.wikipedia.org/wiki/Heat_pipe>

Gus


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