3. Check Wiring Do a visual inspection of the bad light switch and look for loose connections. Loose wire connections at the screw terminal can usually be fixed with the screwdriver.

3. Check Wiring Do a visual inspection of the bad light switch and look for loose connections. Loose wire connections at the screw terminal can usually be fixed with the screwdriver.

A buzzing light switch is the perfect example of a seemingly easy electrical fix. There are lots of underlying conditions that can result in a buzzing sound that begins to emanate from your switch.