Read LG 47LV355T-ZC (CHASSIS:LD11U) Service Manual online
Standard Repair Process Detail Technical Manual
Power Board voltage measuring method
A. Video error_No video/ Audio
A4
Established
date
Revised
date
Error
symptom
Content
LCD TV
A4
Check the DC 20Vor24V, 12V, 3.5V.
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
2011. 2 .07
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