Albert L Goshen , KY November 15, 2015 Appliance: General Electric Free Standing Microwave SCA1000HBB04 Ge Microwave Sca1000hbb04: My vent fan on my microwave was not working correctly. How to replace Motor-Ventilation (Vent Fan Motor). Replaced it Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes