Red protection light on 200! Suggestions?

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now, and Ken - were there any warning symptoms before the failure? From what I read above, it sounds as though it occurred while the units were in standby or switched off.

I ask because one of my 200s is emitting a slight but noticeable smell of burning epoxy resin (the "oops, that IC just exploded" smell...). It seems to be working fine at the moment but I must say I'm a bit worried about it.