I have an Insinkerator 777ss disposal. It is hardwired. When I flipped the switch it popped the breaker. I removed the hot lead from the disposal, reset the breaker and flipped the switch. Nothing happened and the breaker remained set. I assume this means there is a short in the disposal? I connected the hot lead and now when I flip the switch nothing happens and the breaker stays on. Is my next step replacing the disposal? Any assistance is appreciated.