24 Feb
2014
24 Feb
'14
2:09 p.m.
I noticed the
video chip was covered with a white gunk in a couple of the
units I opened in order to reconstitute my working one. I understand this
is some kind of substance which aids with cooling so that chip at least
runs very hot.
White gunk will hurt cooling, not help (white interferes with
radiational cooling).
I take it you?re assuming it is silicone thermal grease. That?s
plausible. But silicone grease only helps cooling if you stick it (in a
*thin* layer) between the device and a suitable heat sink. The heat
sink actually does the cooling.