We were dealing with a full system shutdown. No po...

We were dealing with a full system shutdown. No power to any components, anywhere, even after flipping all the breakers. Turns out the condensation drainpipe wasn't draining, due to a backlog of cruft where the drainpipe meets the trap under the bathroom sink. Mike knew precisely what to do, took care of it all. He hung back after he got things working to a) describe what the problem was and what he'd done, and b) to wait for some time to pass so that he could verify everything was still good to go. 10/10 would be quite happy to have him again.