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Magnetron Thermal Cutout (TCO)
The magnetron TCO is located on the magnetron
and shuts off when the magnetron temperature
reaches 150°F (65.5°C).
The magnetron TCO is a normally closed switch.
An open reading across the TCO indicates a
failed TCO. The magnetron TCO is resetable
Removal
Remove the microwave (see
Microwave Removal
and Component Access
). Disconnect the 2 wires
and remove the screws from the magnetron TCO.
Cavity Thermal Cutout (TCO)
The cavity TCO is located on the top of the
microwave oven on the left side of the forward
vent duct. The microwave oven shuts off when
the temperature of the cavityTCO reaches 212°F
(100°C).
The cavity TCO is a normally closed switch. An
open reading across the TCO indicates an
overtemperature condition or failed TCO. The
cavity TCO is not resettable.
Removal
Remove the microwave (see
Microwave Removal
and Component Access
).
Slide the cavity TCO from the two tabs and
remove the 2 connectors.
Cavity TCO
Fuses
The main and high voltage transformer fuses are
located behind the hidden vent, above the control
panel.
Removal
Remove the hidden vent (see
Microwave Removal
and Component Access
).
Remove the grille to access the fuses.
