LG 50LN54 Series Service Manual page 74

Standard Repair Process Detail Technical Manual
symptom
LCD TV
Content
<ALL MODELS>
Checking method
1. Press the MENU button on the remote controller
2. Select the AUDIO function of the Menu
3. Select Sound Out – TV Speaker
*If you set Sound-Out menu as External Speaker/LG Sound Sync, TV Speaker will not work.
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Error
C. Audio error_No audio/Normal video
Checking method in menu when there is no audio
Established
2013. 01 .09
date
Revised
date
A15
LGE Internal Use Only