LG 32LN49XX / 32LN4900 (CHASSIS:LB35B) Service Manual ▷ View online
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Standard Repair Process Detail Technical Manual
Inverter B+ 24V measuring method
A. Video error_No video/Normal audio
A2
Established
date
Revised
date
Error
symptom
Content
LCD TV
Measure DC Voltage
applying to Module from Power Board.
*Output Voltage
from Power Board -> supply to Module.
Check Pin contacting statement and connection statement.
<ALL MODELS>
2013. 02 .15
*Output Voltage is depend on inch
32 inch : 65.6~86.9V
39 inch : 117.3~142.2V
42 inch : 141.8~164.3V
42 inch : 141.8~164.3V
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Standard Repair Process Detail Technical Manual
Check White Balance value
A. Video error_No video/Normal audio
<ALL MODELS>
A3
Established
date
Revised
date
Error
symptom
Content
LCD TV
Entry method
1. Press the ADJ button on the remote controller for adjustment.
2. Enter into W/B ADJUST
3. After recording the R, G, B (GAIN, Offset) value of Color Temp (Cool/Medium/Warm),
re-enter the value after replacing the MAIN BOARD.
4. Confirm W/B ADJUST “OK” at In
-start menu.
2013. 02.15
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Standard Repair Process Detail Technical Manual
Power Board voltage measuring method
A. Video error_No video/ Audio
A4
Established
date
Revised
date
Error
symptom
Content
LCD TV
Check the DC 24V, 12V, 3.5V.
18 Pin
(Power Board ↔ Main Board) – Common
1
Power on
2
DRV ON
3
3.5V
4
PDIM
5
3.5V
6
N/C
7
GND
8
GND
9
24V
10
24V
11
GND
12
GND
13
12V
14
12V
15
12V
16
N.C
17
GND
18
GND
Edge LED
2013. 02.15
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Standard Repair Process Detail Technical Manual
LCD-TV Version checking method
A. Video error_Video error, video lag/stop
1. Checking method for remote controller for adjustment
Press the IN-START with the remote
controller for adjustment
Version
<ALL MODELS>
A6
Established
date
Revised
date
Error
symptom
Content
LCD TV
2013. 02.15
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