Miguel M Oreland , PA March 13, 2017 Appliance: Frigidaire Microwave FGMV174KFB Frigidaire Microwave Fgmv174kfb: Unit made a buzzing noise and was not heating. How to replace Magnetron (Microwave Oven). Replaced the magnetron and is like new. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes