On Fri, 08 May 2009 17:12:11 +0100, Eeyore
wrote:



Spehro Pefhany wrote:

Mike Tomlinson wrote:
Spehro Pefhany writes

I guess that would be a rather serious problem if the temperature
inside your computer case averaged 105°C = 221°F.

Seen a modern mainboard recently?

Certainly.

Voltage regulation MOSFETs with
heatsinks on, some with their own extractor fans? Heat coupled to the
capacitors by a few millimetres of thick copper PCB trace for excellent
heat conduction?

Have you put a thermocouple on the capacitors?

You need a themocouple and a suitable meter for that ! ;~)

Graham

Really? ;-)

Of course many, if not most, portable multimeters have type K
thermocouple inputs (of dubious accuracy, but good enough for this
sort of thing) and many are supplied with a bead thermocouple.