LG 42LV370S-ZB / 42LV3700-ZC / 42LV370S-ZC / 42LV375G-ZC / 42LV375S-ZC / 42LV375W-ZC (CHASSIS:LD12B) Service Manual ▷ View online
Measure the DC 24V supplied to LED Driver from the Power Board.
Established
date
date
Electronics 6-3
Standard Repair Process Detail Technical Manual
Revised
date
date
2008. 2 . 1
LCD TV
Error
symptom
symptom
LED Driver B+ 24V measuring method
Content
A. Video error_No video/Normal audio
2/33 - 1/13
24V is provided from the Power Board and supplied to LED
Driver PCB. Check the PIN contact condition and connection.
Driver PCB. Check the PIN contact condition and connection.
Check each voltage output (5V,12V,24V) in the Power Board.
Established
date
date
Electronics 6-3
Standard Repair Process Detail Technical Manual
Revised
date
date
2008. 2 . 1
LCD TV
Error
symptom
symptom
Check LED Driver PCB supply voltage
Content
A. Video error_No video/Normal audio
3/33 - 1/13
Entry method
1. Press the ADJ button on the remote controller for adjustment.
2. Enter into White Balance of item 9.
3. After recording the R, G, B (GAIN, Cut) value of Color Temp
(Cool/Medium/Warm), re-enter the value after replacing the MAIN BOARD.
Established
date
date
Electronics 6-3
Standard Repair Process Detail Technical Manual
Revised
date
date
2008. 2 . 1
LCD TV
Error
symptom
symptom
Check White Balance value
Content
A. Video error_No video/Normal audio
4/33 - 1/13
Established
date
date
Electronics 6-3
Standard Repair Process Detail Technical Manual
Revised
date
date
2008. 2 . 1
LCD TV
Error
symptom
symptom
Power Board voltage measuring method
Content
A. Video error_
No video/No audio
5/33 - 2/13
Check each voltage output
(3.5V, 12V, 24V) supplied
from Power Board to Main
Board.
(3.5V, 12V, 24V) supplied
from Power Board to Main
Board.
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