LG 32LF550B - Page 57

Standard Repair Process Detail Technical Manual
Power Board voltage measuring method
A. Video error_No video/ Audio
A4
Established
date
Revised
date
18 Pin (Power Board ↔ Main Board)
SMAW200-H18S5
1
Power on
2
DRV ON
3
3.5V
4
PDIM#1
5
3.5V
6
3.5V
7
GND
8
PDIM#2
9
24V
10
24V
11
GND
12
GND
13 12V 14
12V
15 12V 16
NC
17 GND 18
GND
Check DC 3.5V, 12V, 24V
12 Pin (Power Board ↔ Main Board)
SMAW200-H18S5
1
Power on
2
PDIM#2
3
GND
4
13.2V
5
13.2V
6
13.2V
7
13.2V
8
13.2V
9
GND
10
GND
11
DRV_ON
12
PDIM#1
UHD
FHD/HD
Error symptom
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