I've been a home service type electrician for almost 12 years now. I've been in business on my own for 4 years and I've finally been stumped! I have a homeowner who says that she loses power in her bedroom on a fairly regular basis. When I show up to troubleshoot, everything tests out fine. The breaker has been ruled out because other rooms on the same circuit remain on while her bedroom goes dark. I've checked all of the devices in the other rooms on the circuit and everything tests out fine and the connections are all good. I left her with a woody over the weekend and she said when the power went out it went off (open hot). The power always goes off in the middle of the night (from 11pm to 5am) and comes back on as the day progresses. Short of her being insane, what could it possibly be?? I'm stumped.