Just moved into a 2-story home built in 2002. Upon move in, all lights and switches worked except for a pantry light downstairs and one of the outlets in an outlet box in a small bedroom upstairs.
Things I did:
- Opened up the switch box for the broken pantry light to find that it had cracked in half. Went to HomeDepot, got a replacement switch, and replaced it. Only involved moving the ground, incoming hot, and outgoing hot lines from one switch to the new one. Now the light works.
- Opened up the outlet in the small bedroom to find that everything looked okay. Didn't move any wires, just reinstalled back into wall after inspection. Then I opened up the switch box in this room that controlled the outlet that wasn't working, to find it also was cracked in half. Same procedure as above: got a replacement switch, moved the ground, incoming hot, outgoing hot wires, and reinstalled. Now the outlet works.
At this time, a comcast installer came and spent some time playing with stuff to get the internet coax working. I did not see everything he did.
Later, I realized the overhead lights/fans in the master bed and bath no longer work. They did previously work before the 2 switches were replaced and the comcast install occurred. All of the outlets in the master bed+bath still work. Checked all breakers, none were tripped but I reset them anyway. I could find only 4 GFCI outlets (all located downstairs), and none were tripped but I reset them all anyway. Opened the switch box in the master bed to find no power for any wires coming into the box.
It seems like there's only one breaker for the outlets and overhead lights/fans in the master bed/bath. How is it the outlets can still work but the overhead lights/fans do not?