Bill A Westborough , MA January 11, 2019 Appliance: KitchenAid 5 Quart Artisan Tilt Head Stand Mixer KSM150PSWH0 Kitchenaid Mixer Ksm150pswh0: The speed control lever wouldn't stay in the off position. How to replace Control Plate Spring. Avoiding a drive to the next state, and a minimum $120 repair, I watched this video https://www.youtube.com/watch?v=uQTosv6BnQc and replaced the lever in under 30 minutes. 8-year-old mixer now good as new. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes