I need some electrical advice. I have an older home and the lights flicker. A lot of the issue are broken breakers plugs and sockets which I am replacing as time permits. Seemed they wired the entire house on one circuit. Last night the circuit started flickering and went out. Then came back on about 10 seconds later. Then it did it again until I turned off all the lights and breaker and went to bed. The breaker didn’t trip and I don’t smell anything. I have two more switches to replace and plan to check all my work up to this point to be sure its all tight. What else could it be? Thanks.