Check user menu > Speaker off

Standard Repair Process

 

 

Error

C. Audio error

Established

2010. 12 .14

 

 

LCD TV

date

 

 

symptom

No audio/ Normal video

Revised date

 

8/13

 

 

 

 

 

 

 

 

 

 

 

No audio Screen normal

A24

Check user menu > Speaker off

N

Off

Y

Cancel OFF

A25

Check audio B+ 24V

Normal

Y

of Power Board

 

voltage

 

 

 

 

 

 

Check audio B+ 24V N

Replace Power Board and repair parts

Check Speaker

N

Disconnection

disconnection

 

 

 

Y

Replace Speaker

Replace MAIN Board

End

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LG Electronics 47LM765S/765T Standard Repair Process, date, Check user menu Speaker off, Check audio B+, Normal, voltage