Add Yahoo as a preferred source to see more of our stories on Google. Have you ever walked into a room and flicked the light switch, only to have it flicker or not turn on at all? A faulty light ...

We may earn revenue from the products available on this page and participate in affiliate programs. Learn More › Flickering lights can be disconcerting when you don’t know the cause, or how to fix it.

Have you ever walked into a room and flicked the light switch, only to have it flicker or not turn on at all? A faulty light switch isn't only frustrating, but any kind of mechanical failure should ...