On 08/12/2017 07:24 PM, Fred Smith wrote: > Well. overheating is possible... we don't live in the cleanest possible > house, AND we have cats. so, in general I open up this box twice a year > and vacuum out the house dirt and cat fuzzies. I'm probably overdue for > this task. Cleaning is a good thing to do, but not with a vacuum... the vacuum could loosen components, even make them disappear. Much better would be to use a blower or bellows of some kind. Also, cowboys scoff, but I always wear a grounded wrist strap when handling electronics.