Samsung SR-606EV - Freezers Defrosting Sensor Failure

24 Samsung Electronics
N
Y
Connection failure
N
Y
Change sensor
Is defrosting sensor O.K.
Is connection
of defrosting sensor
O . K .
N
Y
Connection failure
Is main PCB connection
(CON03) O.K. ?
N
Y
Wire open
Is input vltg of CON 03
pin5 O.K.
Change main PCB ass’ y
Start
5) Freezer’ s defrosting sensor failure