The Natural Philosopher wrote:

Hello The

TNP| On inspection, a moth had died in the fan, and got its
TNP| corsep stiuck between the blades and teh heatsink, and teh
TNP| subsequent build up of dist fag ash, mouse droppings and who
TNP| knows waht had clogged theheatsink.

MBM5 is a wonderful tool for diagnostics.

TNP| Must take the fan back. The old one works fine, sans moth...

Keep it. The day after you return it, your existing fan is bound to
die for real.

--
Simon Avery, Dartmoor, UK
uk.d-i-y FAQ: http://www.diyfaq.org.uk/