LG LMXS28626 Series - Freezer Lamp Not Working Troubleshooting

Symptom Check Point
1. Freezer room upper
lamp doesn’t work
1. Check the Freezer door switch sticky
2. Check the door S/W resistance
3. Check the LED Lamp
8-15. Freezer room upper lamp doesn’t work
S/W Resistance [Ω]
Door
Open Infinity
Close 0
Voltage [V]
CON7
31
th
pin ~ 32
th
pin
12V
F-Door LED Lamp
Voltage
[V]
Open White ~ Black 12V
Close White ~ Black 0~2V
F U LED PCB
Door S/W
CON6
CON1
CON201
CON4
CON5
CON7
CON2 CON3