Temperature sensor
Reads or limits temperature. A failed one can stop the heat or let it run too hot.
Door gasket
Leaks, a torn edge or a door that won't seal mean it's time for a new one.
Magnetron
A motor that hums but won't turn, or stops once it's warm, needs replacing.
Lamp
Replaces WB08T10022
The light bulb this model takes.
High-limit thermostat
Reads or limits temperature. A failed one can stop the heat or let it run too hot.
Monitor switch
Replaces WB24X0830
Door, lid and control switches stop a cycle when they fail.
1SensorWB23T10015
2Door gasketWB04T10050
3MagnetronWB27X10516
4Lamp40A15Part numbers come from the Sears PartsDirect parts list for the GE JTP90CM1CC (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 oven door: the plate is on the frame or the side trim.