Gian A Montgomery , TX September 21, 2026 Appliance: Frigidaire Built-In Microwave GMBS3068AFA Frigidaire Built-In Microwave Gmbs3068afa: Microwave not turning on but timer works. How to replace Microwave Micro Switch. Microwave door switch Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes