Checking Flow Chart By Failure - LG LSSE3029BD Service Manual

CHECKING FLOW CHART BY FAILURE

Symptom
1. Power Failure
(Dead)
2. No Display
CN03
Thermostat
1. Check Electrical Wiring
2. Check the SMPS PCB Input Voltage with CN01
Main PCB
WH
CN01
RD
9-1
Check Point
CN01
CN03
CN02
SMPS PCB
CN02
Pin No. Voltage
1-3 Vf(4.3V)
4-7 -33V
6-7 12V