State one — completely dead. No sound at all. Can you use the sink? Yes, normally. Water passes straight through a disposal whether the motor runs or not, so the sink drains exactly as it always did. What to avoid: putting food waste down it. With no grinding, anything solid sits in the chamber and starts to smell within a day or two. What's likely wrong: the reset button on the underside has tripped, a breaker, or the wall switch. This is the fastest fault on the page and frequently free — see below. Fix time: minutes, and often before anyone is dispatched.