LG 42LB650V - Check Power Input Voltage and ST-BY 3.5 V

Standard Repair Process Detail Technical Manual
Check power input voltage and ST-BY 3.5V
B. Power error _No power
A18
Established
date
Revised
date
Error
symptom
Content
LCD TV
A18
Check the 3.5V (3, 5, 6 Pin)
2014. 01 .20
24 Pin (Power Board ↔ Main Board)
SMAW200-H24S5
1
Power on
2
Inverter On
3
3.5V
4
PWM#1
5
3.5V
6
3.5V
7
GND
8
PWM#2
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/DIM0_VS
23 L/DIM0_MOSI 24 L/DIM0_SCLK
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