Three ceiling lights which worked for years, cannot be turned off. There are three switches, each of which controls all three lights (they are all on or all off). Is there a simple fix or must I call an electrician? I didn't change anything.
One of the switches has failed and will likely need to be replaced. There will be two "three way" switches and one "four-way" switch. It's the four-way that has broken. The switch may feel different when you toggle it.
Unscrew the bulbs until you get it fixed.
One of you switches have failed. The solution is to start replacing switches, like for like.
The switch leg for the light is hooked up to the constant hot.