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22LS3500, 22LS350S, 22LS350T, 22LS3510, 22LS3590, 22LS359S, 22LS359T (CHASSIS:LD21A) - LG TV Service Manual (repair manual). Page 47

Read LG 22LS3500 / 22LS350S / 22LS350T / 22LS3510 / 22LS3590 / 22LS359S / 22LS359T (CHASSIS:LD21A) Service Manual online

No audio
Screen normal
Check user 
menu  > 
Speaker off
Off
N
Y
Cancel OFF 
Check audio B+ 
24V of Power 
Board
Normal
voltage
Y
N
Replace Power Board and repair parts
Check 
Speaker 
disconnection
N
Y
Replace Speaker 
Replace MAIN Board
End
C. Audio error
No audio/ Normal video  
☞A15
☞A16
Disconnection
Established
date 
Revised date 
9/14
LCD  TV
Error
symptom
Standard Repair Process
2012. 01 .14
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