Flame sensor
Replaces WB20X0141
A burner that lights and then shuts off often has a dirty or failed flame sensor.
High-voltage capacitor
Replaces WB27X0933
A motor that hums but won't start often needs a new capacitor.
Switch
Replaces WB24X0800
Door, lid and control switches stop a cycle when they fail.
Motor capacitor
Replaces WB27X0705
A motor that hums but won't start often needs a new capacitor.
1Flame sensorWB27X10195
2CapacitorWB27X10240
3SwitchWB24X830Part numbers come from the Sears PartsDirect parts list for the GE JVM250BL03 (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.