Start
Is power supplied to
sub-PCB?
Is power supplied to
smoother C2?
Is TH-S/W normal?
Does lamp oscillate
at 35±5KHz?
Check PTC.
Replace lamp
Replace TH-S/W
Check the power
Check wires and
main PCB relay
Repair C6, C7 or
PTC(RT1)
N
N
N
N
Y
Y
Y
Y
Samsung Electronics 27
4) Troubleshooting
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.
Precautions
✻ PTC should be inspected before replacing lamp.
✻ Be careful of high voltage discharge, when repairing unit.
① When the light dosen’t come on in the refrigerator
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