Steven W Chaplin , CT April 09, 2021 Appliance: Electrolux Microwave FPBM3077RFB Electrolux Microwave Fpbm3077rfb: Microwave blowing fuse in unit. How to replace Fuse. Replaced door switch holder. Plastic worn out. Replace fuse that was not easy to get to, made new access to fuse holder. Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours