Garry L Hagerstown , IN August 04, 2018 Appliance: Model MED 550XWO Idler pulley locked up. Identified the issue. Then called the PROS to order the parts. Ordered heating element and changed it along with the sensors while it was apart. Always get the correct parts the first time when I order them from you guys. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes