Trouble Shooting Guide - LG UltraFine 27MD5KL Service Manual

1. No Power
N
Ch eck
C1102 Voltage: 20V
Y
N
Ch eck
IC1101 Voltage: 3.3V
Y
N
Ch eck
IC1103 Voltage: 1.5V
Y
N
Ch eck
IC1102 Voltage: 1.1V
Y
N
Ch eck X500 Clock
14.318MHz
Y
Ch ange th e Flash IC501

TROUBLE SHOOTING GUIDE

Y
Ch eck th e Power
Con nection
Ch ange th e IC1101
Ch ange th e IC1103
Ch ange th e IC1102
Ch ange th e X500
Ch ange th e PSU
(P ower Board)
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