LG 37LV370S Service Manual page 48

Standard Repair Process
Error
LCD TV
symptom
☞165
Check user
No audio
menu item
Screen normal
Speaker off
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C. Audio error
No audio/Normal video
N
Use Sound
Off
Test Menu
Y
Cancel OFF and describe
Replace MAIN Board
End
Established
date
Revised date
☞166
N
Check audio
Normal
B+24V of Power
Sound
Board
Y
Check Input Signal
Disconnection
Y
Replace Speaker
Electronics 6-3
2008. 2 . 1
N
Replace Power
Normal
Board and
voltage
repair parts
Y
N
Check
Speaker
disconnection
LGE Internal Use Onl
8/13