Mark for Model Number MMV4203DS00 Microwave will work one time when it cools down. After that inside cabinet gets hot, magnetron gets hot, but food does not.
Answer Hi Mark. Above the turntable tray is a stirrer cover held in place by a button part # DE66-20095B. Remove it and the cover. Is the stirrer blade broken? Rare but will not allow heat, part # is W10250840. The magnetron part # WPW10126786, capacitor part # 8206562, and the diode part # WPDE91-70063D all fire together to make 'Heat" . Usually there is a very noticeable growl noise along with no heat. Is the fan part # WPW10250841, working? Is the fan blade broken? Behind control assy.,not on top. Part # DE31-90051A. Examine all components. Thank you. Read More... Answered by AppliancePartsPros.com | Wednesday, October 12, 2011