No audio
Screen normal
Check user
menu >
Speaker off Off N
Y
Cancel OFF
Check audio B+
24V of Power
Board
Normal
voltage
Y
N
Replace Power Board and repair parts
Check
Speaker
disconnection
N
Y
Replace Speaker
Replace MAIN Board End
C. Audio error
No audio/ Normal video
A15 A16
Disconnection
Established
date
Revised date 9/14
LCD TV Error
symptom
Standard Repair Process
2012. 01 .14
LGE Internal Use Only