Washer drum won't spin

Our 5-1/2 y.o. Front Load Bosch WFL 2060 fills and drains fine. The drum won’t turn. I replaced the brushes in the motor and still no motor. I don’t think the motor is getting any power. Is there a relay or possibility of the Control Board needing replacement? How would I test for this? I set the dial to "SPIN" and press START but no response. Any other tests or parts check you would recommend? Thanks!