Hugh H Duluth , GA February 18, 2017 Appliance: Model LABEL INSIDE THE OVEN DOOR. Everything seemed to work but it did not heat anything and made a loud buzzing noise The rectifier (a high-voltage diode) connected to the magnetron that supplies the RF energy that does the heating in the microwave was shorted. The shorted rectifier was found by using a multimeter to measure resistance which should be very high in this type of diode. After replacing the rectifier the Frigidaire microwave oven heated food normally. I thank AppliancePartsPros for sending the part so promptly. The real problem with this repair was getting this over the stove microwave oven out of the cabinet .I had to research how it was mounted and then with all bolts removed it was stuck in the cabinet.Getting it out and back in was difficult especially for one man. Read More... 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 2+ hours Tools: Nut Drivers, Pliers, Screwdrivers, Socket Set
Jim M Fort Collins , CO December 16, 2025 Appliance: Frigidaire Microwave PLMB209DCB Microwave was running but not heating I looked at several YouTube videos as well as input on the AppliancePartsPro website. I replaced the magnetron, rectifier and microwave cover. Read More... Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes Tools: Pliers, Screwdrivers
Calvin P South Prince George , VA December 31, 2018 Appliance: Model FRIGIDAIRE Rectifier was bad Replace with new one Read More... Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes Tools: Pliers, Screwdrivers