High-voltage capacitor
A motor that hums but won't start often needs a new capacitor.
Magnetron
Replaces WB27X10880
A motor that hums but won't turn, or stops once it's warm, needs replacing.
Halogen light bulb
The light bulb this model takes.
Micro-switch
Replaces WB24X10075
Door, lid and control switches stop a cycle when they fail.
Turntable motor
A motor that hums but won't turn, or stops once it's warm, needs replacing.
Latch body
Door, lid and control switches stop a cycle when they fail.
Door interlock switch lever
Door, lid and control switches stop a cycle when they fail.
1CapacitorWB27X10011
2MagnetronWB27X10939
3Light bulbWB36X10213
4Micro-switchWB24X830Part numbers come from the Sears PartsDirect parts list for the GE JVM1850DM3WW (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.