Thermostat
Reads or limits temperature. A failed one can stop the heat or let it run too hot.
Capacitor
Replaces 0CZZW1H002J
A motor that hums but won't start often needs a new capacitor.
Latch board
Replaces 3501W1A003U
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.
Lamp
The light bulb this model takes.
1Thermostat6930W1A003A
2Capacitor0CZZW1H004C
3Latch board3501W1A053A
4Magnetron6324W1A001BPart numbers come from the Sears PartsDirect parts list for the LG LMA2111ST (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.