65LA9700-TA, 65LA970Y-TA (CHASSIS:LB34N) - LG TV Service Manual (repair manual). Page 126

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Checking method
1. Press the Setting button on the remote controller
2. Select the Sound function of the Menu
3. Select the Sound Setting
4. Select TV Speaker
Standard Repair Process Detail Technical Manual
Checking method in menu when there is no audio
C. Audio error_No audio/Normal video
<ALL MODELS>
A20
Established 
date 
Revised 
date 
Error 
symptom
Content
LCD  TV
A20
2013.01.31
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