Samsung SR-L629EV - When the Light Dosen’t Come on in the Refrigerator

6-5) When the light dosen’t come on in the refrigerator
1. Is the power cord well connected to wall outlet?
2. Be careful of high-voltage discharge because high voltage DC power is supplied to SUB-PCB.
Reference
Start
Y
N
Replace door switch, check main wire
Is door switch normal?
Y
N
Check relay, exchange main pcb
Exchange LAMP
Is main pcb relay
normal(RY75)?
Y
N
Check connector and wire
Is power suppling to
SUB PCB input?
Y
N
Check SUB PCB power input
Is power suppling to
DC part C2 of rectifier?
Y
N
Exchange LAMP
Exchange SUB PCB
Fluorescent LAMP
normal?
Fluorescent LAMP(SUB PCB)
38