LG 55G2 Service Manual page 114

Standard Repair Process Detail Technical Manual
LCD TV
<XXG2-UG>
Copyright ⓒ 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Error
B. Power error _No power
symptom
Content Check power input voltage and ST-BY 3.5V
24 Pin (Power Board ↔ Main Board) -
SMAW200-H24S (YEONHO)
1 Power on
24V
3
GND
5
7 GND
3.5V
9
11 3.5V
13 GND
15 GND
17 12V
19 12V
21 12V
23 PWM Dim #2
A18
Established
2011. 12 .14
date
Revised
date
공통
2 24V
24V
4
GND
6
8 GND
3.5V
10
12 3.5V
GND
14
V-sync
16
18 DRV_ON
N.C
20
PWM Dim #1
22
24 Error-out
A18
LGE Internal Use Only