Steve F North Tonawanda , NY May 03, 2020 Appliance: Frigidaire Microwave Hood Combo FPMV189KFB Frigidaire Microwave Fpmv189kfb: Microwave making clunky noise while heating. How to replace Magnetron (Microwave). Replaced magnetron. Make sure you discharge high voltage capacitor.. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes