Video Error_No Video/ Audio; Pin (Power Board ↔ Main Board); Power On; Gnd - LG 47LM6400 Service Manual

Standard Repair Process Detail Technical Manual
symptom
LCD TV
Edge LED
Copyright ⓒ 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Error
A. Video error_No video/ Audio
Content
Power Board voltage measuring method
Check the DC 24V, 12V, 3.5V.
24 Pin (Power Board ↔ Main Board) -
SMAW200-H24S (YEONHO)
1

Power on

3 24V
5

GND

7 GND
9 3.5V
3.5V
11
13 GND
15 GND
17 12V
19 12V
21 12V
23

GND/P_DIM2

• Lamp SCANNING Model
: PWM Dim #2
61 / 79
Established
2010. 12 .14
date
Revised
date
공통
2 24V
4 24V
6 GND
8 GND
10 3.5V
3.5V
12
GND
14
GND
16
18 Inverter On/off
20 Lamp : A-Dim
LED : N.C
PWM Dim #1
22
24 Error-out
A5
LGE Internal Use Only