How to Tell If a Light Switch Is Bad

How do I know if my break light switch is bad. : r/MechanicAdvice

ballast - How to tell if a fluorescent light gone bad or the switch - Home Improvement Stack Exchange

If your light is turned off but the light switch is not all the way shut, will you still be charged for electricity? - Quora

Fixing Common Light Fixture Problems

I have light that stays on even when the switch is turned off. I just changed the switch and the light still stays on

Is My Light Switch Going Bad?

How to Wire a Light Switch Safely

Light switch stopped working. With breaker off, one wire is still hot? : r/AskElectricians

DIY) How to replace a bad light switch.