LG 55LM860V Service Manual page 84

Standard Repair Process
Error
LCD TV
symptom
No audio
Screen normal
Copyright © 2012 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
C. Audio error
No audio/ Normal video
☞A24
Check user
menu > Off
Speaker off
Y
Cancel OFF
Check
Speaker
disconnection
☞A25
Check audio B+
N
24V of Power
Board
Replace Power Board and repair parts
N
Disconnection
Y
Replace Speaker
8
Established
2012.01.16
date
Revised date
Y
Normal
voltage
N
Replace MAIN Board End
8/15
LGE Internal Use Only