Thermal cut-off
Reads or limits temperature. A failed one can stop the heat or let it run too hot.
Hi capacitor
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.
Light bulb
The light bulb this model takes.
Turntable motor
A motor that hums but won't turn, or stops once it's warm, needs replacing.
Primary interlock switch
Door, lid and control switches stop a cycle when they fail.
Monitor switch
Replaces WB24X0817
Door, lid and control switches stop a cycle when they fail.
1Thermal cut-offWB24X10163
2Hi capacitorWB27X11011
3MagnetronWB27X10876
4Light bulbWB36X10063Part numbers come from the Sears PartsDirect parts list for the GE JEB186CDN1BB (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.