Whirlpool duet dryer issue

One week ago today, my dryer stopped working. The power comes on when you press the button, but when you push start, there is just a click (solenoid, I assume) and the drum will not turn. I have replaced the thermal fuse, thermistor, broken belt switch, and regrettably the motor, and it still will not work. I have tested the heating element and thermostat with a multi meter, and they test good. Aside from the control board, I am not sure what else could be the issue. Any input from someone knowledgable on this would be welcomed and much appreciated.