Noise filter
Filters clog with use. The manual lists how often to change it.
Thermal cut-off
Reads or limits temperature. A failed one can stop the heat or let it run too hot.
Magnetron
A motor that hums but won't turn, or stops once it's warm, needs replacing.
Micro-switch
Replaces WB24X10075
Door, lid and control switches stop a cycle when they fail.
Turntable motor coupler
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.
1Noise filterWB02X11200
2Thermal cut-offWB27X10195
3MagnetronWB27X10939
4Micro-switchWB24X830Part numbers come from the Sears PartsDirect parts list for the GE HVM1540SN3SS (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.