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Standard Repair Process Detail Technical Manual
symptom
LCD TV
Content
Copyright
2015 LG Electronics Inc. All rights reserved.
Only for training and service purposes
Error
B. Power error _No power
Check power input voltage and ST-BY 3.5V
①
②
③
Check the DC 24V, 12V, 3.5V.
24Pin(Power Board ↔ Main Board)
1
PWR ON
3
DPC
5
3.5V
7
3.5V
9
GND
11
12V
13
12V
15
12V
17
GND
19
24V
21
24V
23
GND
A9
Established
2014.12.31
date
Revised
date
2
INV CTL
4
PDIM#2
6
GND
8
3.5V
10
GND
12
12V
14
12V
16
GND
18
12V_ON
20
24V
22
24V
24
GND
A18
LGE Internal Use Only
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