Read LG 37LK430 / 37LK430A / 37LK430N / 37LK430U (CHASSIS:LD01U) Service Manual online
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 when st-by
For ’11 models, there is no voltage out for st-by purpose.
When st-by, only 3.5V is normally on.
When st-by, only 3.5V is normally on.
2011. 2 .07
Edge LED PSU without LED Driver
Lamp PSU without inverter
24 Pin
(Power Board ↔ Main Board)
FW20020-24SB (FOOSUNG)
1
Power on
2
20V (24V)
3
20V (24V)
4
20V (24V)
5
GND
6
GND
7
GND
8
GND
9
3.5V
10
3.5V
11
3.5V
12
3.5V
13
GND
14
GND
15
GND
16
GND
17
12V
18
Inverter On/off
19
12V
20
Lamp : A-Dim
21
12V
22
PWM Dim #1
23
N.C
24
Error-out
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