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Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only
Standard Repair Process Detail Technical Manual
Power Board voltage measuring method
A. Video error_No video/ Audio
A5
Established
date
Revised
date
Error
symptom
Content
LCD TV
Check the DC 24V, 12V, 3.5V.
24 Pin (Power Board ↔ Main Board)
SMAW200-H24S
1
Power on
2
Inverter On/off
3
3.5V
4
PWM Dim #1
5
3.5V
6
PWM Dim #2
7
GND
8
GND
9
24V
10
24V
11 GND 12 GND
13 12V 14 12V
15 12V 16
24V
17 GND 18 GND
19 GND 20 GND
21 GND 22
L/DIMO_VS
23 L/DIM0_MOSI 24 L/DIM0_SCLK
2012. 12 .06