Ikea microwave convection element high-limit thermostat
No heat after a full cycle usually means a burned-out element.
Fuse
Reads or limits temperature. A failed one can stop the heat or let it run too hot.
Gasket
Leaks, a torn edge or a door that won't seal mean it's time for a new one.
High-voltage capacitor
A motor that hums but won't start often needs a new capacitor.
Elite microwave magnetron
A motor that hums but won't turn, or stops once it's warm, needs replacing.
Switch
Door, lid and control switches stop a cycle when they fail.
1Thermostat5304515313
2Fuse5304514258
3Gasket5304515305
4Capacitor5304513458Part numbers come from the Sears PartsDirect parts list for the Frigidaire PMBD3080AFA (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.