Answer Hello Ed. You will need to remove the outer cover off the microwave to access and replace the fuse WB27X10928 in the unit. Some models the grille and control panel can be removed and they are behind it. You can look there first without uninstalling the microwave. Make sure you have the power disconnected to the unit. Thank you. Read More... Answered by AppliancePartsPros.com | Friday, March 9, 2018