LG 42LM660S - Check Power Input Voltage and ST-BY 5 V

Standard Repair Process Detail Technical Manual
Check power input voltage and ST-BY 5V
B. Power error _No power
A18
Established
date
Revised
date
Error
symptom
Content
LCD TV
For ’10 models, there is no voltage out for st-by purpose.
When st-by, only 3.5V is normally on.
Check the DC 20V/24V, 12V, 3.5V.
Edge LED
2010. 12 .14
Edge LED
24 Pin (Power Board ↔ Main Board)
SMAW200-H24S (YEONHO)
1
Power on
2
24V
3
24V
4
24V
5
GND
6
GND
7
GND
8
GND
9
3.5V
10
3.5V
11
3.5V
12
3.5V
13 GND 14
GND
15 GND 16
GND
17 12V 18
Inverter On/off
19 12V 20
Lamp : A-Dim
LED : N.C
21 12V 22
PWM Dim #1
23 GND/P_DIM2
• Lamp SCANNING Model
: PWM Dim #2
24 Error-out
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