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microwaves have an internal fuse , if there are no lights or digital display then the fuse has blown, the fuse is located behind the control panel. microwaves are dangerous to work on internally however so be extremely careful if you replace this yourself. its recommended a tech work on this . the high voltage capacitor can store enough voltage to kill you if its not discharged. (even when unplugged) please be safe. Lowes sells the fuses if you do this yourself. the fuse looks like this, hope this helps, thanks, Bryan
How can I discharge the capacitor? I have done minor wiring work around the house, and have dealt extensively with cicuit board diagnostics. Also, how do I remove the control panel?