Alma H Santa Rosa , CA October 03, 2019 Appliance: Magic Chef Microwave MCO160UW Magic Chef Microwave Mco160uw: Grill vent broke off at screw insertion points while cleaning. How to replace Vent Grill White (Mc. I purchased a new grill vent from Appliance Parts Pros.com to replace the broken gill. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes