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Standard Repair Process
Error
symptom
Check user menu
No audio
→ Internal TV Speaker
Screen normal
or not
C. Audio error
No audio/ Normal video
☞A11
Off
Cancel OFF
Check Speaker
disconnection
☞A12+A9
Check audio B+
N
voltage(20V) of
Power Board
Y
Replace Power Board and repair parts
N
Disconnection
Y
Replace Speaker
10
Established
date
Revised date
Y
Normal
voltage
N
Replace MAIN Board
End
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