Vent motor capacitor
A motor that hums but won't start often needs a new capacitor.
Magnetron
Replaces WB27X10017
A motor that hums but won't turn, or stops once it's warm, needs replacing.
Monitor switch
Replaces WB24X0830
Door, lid and control switches stop a cycle when they fail.
Cooking tray
Replaces WB39X10002
Racks, shelves and bins made to fit this model.
Door interlock switch lever
Door, lid and control switches stop a cycle when they fail.
1Motor capacitorWB27X10170
2MagnetronWB27X10735
3Monitor switchWB24X830
4Cooking trayWB39X10003Part numbers come from the Sears PartsDirect parts list for the Hotpoint RVM1425BA01 (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.