LG 50LF6090 Service Manual page 49

Standard Repair Process
Error
symptom
No audio
Screen normal
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C. Audio error
No audio/ Normal video
☞A24
Check user
TV
menu >
Speaker?
Sound Out
N
Change the TV Speaker
Check Speaker
disconnection
☞A25
Check audio B+ 24V
Y
of Power Board
Replace Power Board and repair parts
N
Disconnection
Y
Replace Speaker / Cable
10 / 97
Established
date
Revised date
Y
Normal
voltage
N
Replace MAIN Board End
8/13
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