LG 60LN57 Series Service Manual page 89

Standard Repair Process Detail Technical Manual
symptom
LCD TV
Content
For '10 models, there is no voltage out for st-by purpose.
When st-by, only 3.5V is normally on.
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Error
B. Power error _No power
Check power input voltage and ST-BY 3.5V
Established
Revised
Check the DC 24V, 12V, 3.5V.
24 Pin (Power Board ↔ Main Board)
SMAW200-H24S
1 Power on
3 3.5V
5 3.5V
7
GND
9
24V
11 GND
13 12V
15 12V
17 GND
19 GND
21 GND
23 L/DIM0_MOSI
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2012. 12 .06
date
date
2 Inverter On/off
4 PWM Dim #1
6 PWM Dim #2
8
GND
10
24V
12 GND
14 12V
16
24V
18 GND
20 GND
22 L/DIMO_VS
24 L/DIM0_SCLK
A18
LGE Internal Use Only