Fuse
Reads or limits temperature. A failed one can stop the heat or let it run too hot.
High-voltage capacitor
A motor that hums but won't start often needs a new capacitor.
Magnetron
Replaces WB27X11211
A motor that hums but won't turn, or stops once it's warm, needs replacing.
Door interlock switch
Door, lid and control switches stop a cycle when they fail.
Door monitor switch
Door, lid and control switches stop a cycle when they fail.
Door latch housing
Door, lid and control switches stop a cycle when they fail.
Door interlock switch
Door, lid and control switches stop a cycle when they fail.
Door latch
Replaces WB14X10053
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.
1FuseWB27X11138
2CapacitorWB27X11214
3MagnetronWB26X23320
4Interlock switchWB24X10146Part numbers come from the Sears PartsDirect parts list for the GE JNM3161DF2BB (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.