Samsung RL25DATW - 12-2 When troubles are found by self-diagnosis

A. When the freeze sensor breaks down
Start
Is the mainboard connector
plug-in ok?
Are the mainboard sensor
connectors linked properly?
Is the input voltage on the core
chip leg 26# ok?
Is the freeze temperature
sensor ok?
Change the temp.sensor
Plug in the connector
again for bad contact.
Disconnect sensors
Check for miss or vold
welding, short circuit
Are PCB and temp. sensor
ok? Recheck the connector
N
N
N
N
Y
Y
Y
Y
B. When the refrigerating sensor breaks down
Start
Is the mainboard connector
plug-in ok?
Are the main board sensor
connectors linked properly?
Is the input voltage on the core
chip leg 30# ok?
Is the refrigerating temperature
sensor ok?
Change the temp.sensor
Plug in the connector
again for bad contact.
Disconnect sensors
Check for miss or vold
welding, short circuit
Are PCB and temp. sensor
ok? Recheck the connector
N
N
N
N
Y
Y
Y
Y
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12-2 When troubles are found by self-diagnosis