41729 - LG Washing Machine Service Manual (repair manual). Page 28

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Check the connectors at the
main PCB and the main
motor.  Are the connectors
loose or disconnected?
Main PCB connectors RD3
and NA4
Motor connectors to stator and
hall sensor

Reconnect
the connector.
(connector /
wire / motor )

Replace
the ROTOR.

Is rotor magnet cracked?

Magnet

Replace
the STATOR.

Check the resistance of the
stator winding from the main
PCB connector RD3.  Is the
resistance between each
pair or wires between 5  and
15 ? (Measure pins 1-2, 1-3
and 2-3.) 

Replace
the Hall
sensor.

Is hall sensor out of
order? 

(Refer to 9-3

Stator assembly/Hall
sensor.)

Replace the
MAIN PWB
ASSEMBLY.

Check the IPM in the
controller.