LG 24LN451B Service Manual page 14

2. No Picture
Module
Back Light On ?
Y
Check Panel power
P601(#27,28,29,30) 12V
IC801 Output 12V
Y
Check Panel clock
P601(#9,10)
Y
Check FFC Cable for damage
or open conductors.
Y
Replace T-con
Board or module
Copyright © LG Electronics. Inc. All right reserved.
Only for training and service purposes
N
Check WLED_ENABLE high
R130 or R126
Y
Check LED Driver output
(LED Driver B'd P1100 #6)
N
Replace IC801
N
Check IC101
Repair Main B/D
N
Replace Cable
- 14 -
N
Check IC101
Replace Main Scaler IC
N
Check LED Driver IC1100
Replace LED Driver IC
LGE Internal Use Only