I have replaced all electrical outlets and light switches in my home. All are working
I have replaced all electrical outlets and light switches in my home. All are working except 4 light switches. 3 are together: a single pole that controls foyer light, a single pole that controls porch light, and a 3-way that controls outside lights. The corresponding 3-way for the outside lights (that is in a different area) is the 4th one that is not working. I have checked the wiring and the breaker, all is OK. Any troubleshooting ideas?