LG 42LB5610 Service Manual page 80

Standard Repair Process Detail Technical Manual
Error
symptom
LCD TV
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Only for training and service purposes
B. Power error _No power
Content
Checking method when power is ON
Established
2012. 01 .14
date
Revised
date
Check "power on(Pin 1)" pin is high(about 3.3V)
18 Pin (Power Board ↔ Main Board)
SMAW200-H18S5
1 Power on 2
3 3.5V 4
5 3.5V 6
7 8
GND
9 10
24V
11 GND 12
13 12V 14
15 12V 16
17 GND 18
A13
DRV ON
PDIM#1
3.5V
PDIM#2
24V
GND
12V
NC
GND
LGE Internal Use Only