Crash boom oops

Our neighbors were over chatting this evening, when we suddenly realized a big thunderstorm had been creeping up on us. We were quite startled when the house appeared to jump, as a huge thunderclap sounded, very close outside. Later this evening, I noticed the bedroom TV doesn't turn on any more. Then, on a hunch, I wandered the house, and found some surge protectors that had their circuit breakers tripped, and reset them, which got the living room TV and basement stereo working. After a little troubleshooting, all I could figure out, was that the new power circuit, installed back in 2008 for the wall mounted TV, is dead. I have no idea where that circuit comes from. A bunch of audio/video cables disappear into the wall alongside it, but they reappear out another hole, over by the cable box, VCR, and DVD player, and plug into the back of all that. No sign of the power cord there. Hmm.