Bake element
An element that won't heat, or shows a break or blister, needs replacing.
Temperature sensor
Reads or limits temperature. A failed one can stop the heat or let it run too hot.
Encoder board
Replaces WB27X11022
A dead display or random faults can come from the control board.
Magnetron
A motor that hums but won't turn, or stops once it's warm, needs replacing.
Thermostat
Reads or limits temperature. A failed one can stop the heat or let it run too hot.
Light bulb
The light bulb this model takes.
Door interlock switch
Replaces WB24X10029
Door, lid and control switches stop a cycle when they fail.
Door interlock switch
Replaces WB24X817
Door, lid and control switches stop a cycle when they fail.
Latch assembly
Replaces WB10X23475
Door, lid and control switches stop a cycle when they fail.
1Bake elementWB44X21667
2SensorWB21X10165
3Encoder boardWB27X32632
4MagnetronWB27X10305Part numbers come from the Sears PartsDirect parts list for the GE PT7800DH2BB (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.