LG 32LW5700 Manual page 80

Standard Repair Process Detail Technical Manual
LCD TV
ALEF 47"/55"
Edge LED 42 PSU
Copyright ⓒ 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Error
B. Power error _No power
symptom
Content Checking method when power is ON
Edge LED
32 PSU
Established
date
Revised
date
There are several wafers on power board.
Don't get confused about 24P power out wafer.
You can refer to not only left pictures and 'P201' silk print near by wafer.
Check "power on" pin is high
1 Power on
3 20/24V
5 GND
7 GND
9 3.5V
11 3.5V
13 GND
15 GND
17 12V
19 12V
21 12V
NC
23
(Lamp Scanning Model
: PWM Dim #2)
2011. 1. 20
A19
Pin layout (24P)
24V
2
20V (Edge 32/37 Only)
4 20/24V
6 GND
8 GND
10 3.5V
12 3.5V
14 GND
16 PSU : GND, LPB : NC
18 Inverter ON
Lamp : A-dim
20
LED : NC
PWM Dim #1
22
Error-out
24
LGE Internal Use Only