Why does my circuit breaker trip after everything in room is shut down?
Strange that it happens with things turned off, I haven't heard of a PlayStation causing this when sleep mode but since that is the only thing still active I would try connecting it to another branch circuit via an extension cord and see if the problem moves, if still tripping try the TV next , and the sound system after that. The lights can't be the problem because there is no power when the switch is turned off. I never suggest running a space heater on a extension cord unless it is a heavy 12 gauge cord but try plugging it in on a different circuit also I would think if the heater was the problem the breaker would trip when other items were turned on.