kitchen aid dishwasher start button doesn't work

The dishwasher was fine and dandy. The control panel didn’t work at all when I tried to turn it on. I unplugged it and replugged it and then all the buttons worked but not the start button. I checked the fuse and there is continuity. Does anyone know how I can diagnose if it’s the board (inside) or the control panel (outside)? And, how do I fix it?