Carolyn D Baltimore , MD April 05, 2018 Appliance: KitchenAid Mixer KSM150 Kitchenaid Mixer Ksm150: Kitchenaid artisan would not spin. How to replace Speed Control Plate. I replaced the speed governor, speed control plate and phase control board as suggested by the videos which were a great help. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes