Capacitor
Replaces 53001539
A motor that hums but won't start often needs a new capacitor.
Magnetron
A motor that hums but won't turn, or stops once it's warm, needs replacing.
Micro-switch
Replaces 53001019
Door, lid and control switches stop a cycle when they fail.
1CapacitorWP59001168
2Magnetron53001581
3Micro-switch4392027Part numbers come from the Sears PartsDirect parts list for the Maytag MMV4205AAS (view the list), checked November 15, 2026. Amazon buttons open a search for the part number; we may earn a commission.
Where the model number is
Open the door: the label is on the frame. Over-the-range models: sometimes behind the vent grille.