42LM7600 (CHASSIS:LT22E) - LG TV Service Manual (repair manual). Page 127

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Checking method
1. Press the MENU button on the remote controller
2. Select the AUDIO function of the Menu
3. Select TV Speaker from Off to On
Checking method in menu when there is no audio
C. Audio error_No audio/Normal video
<ALL MODELS>
A24
Established 
date 
Revised 
date 
Error 
symptom
Content
LCD  TV
2010. 12 .14
Standard Repair Process Detail Technical Manual
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