James R Fayetteville , NC October 05, 2015 Appliance: General Electric Free Standing Microwave SCA1000DWW03 Ge Microwave Sca1000dww03: Constant damper motor grinding whenever unit was plugged in. How to replace Damper Inlet Ass'y. Replaced the damper motor assembly. Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours