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Standard Repair Process Detail Technical Manual
symptom
LCD TV
Content
ALEF LED
Copyright © 2012 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Error
A. Video error_No video/ Audio
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
20V (24V)
5
GND
7
GND
9
3.5V
11
3.5V
13
GND
15
GND
17
12V
19
12V
21
12V
23
N.C
(only Lamp SCANNING Model
: PWM Dim #2)
A4
Established
2011. 12 .14
date
Revised
date
공통
2
20V (24V)
4
20V (24V)
6
GND
8
GND
10
3.5V
12
3.5V
14
GND
N.C
16
(Only LPB : V-sync)
Inverter On/off
18
N.C
20
(LPB, Lamp : A-dim)
PWM Dim #1
22
24
Error-out
A4
LGE Internal Use Only
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