I bought a house two years ago with a newly replaced dishwasher. Off an on over the two years, the motor has made humming noises occasionally. I checked the chopper and it has always been clear. Yesterday, I went to start it up and noticed an inch of water standing in the bottom. I checked the drain and hoses and everything appears to be clear. But I've noticed that I can't start it up and I don't get any lights to light up. Is my control board shot? Is there a safety switch that has tripped that needs to be reset? Any suggestions?