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32LH30FD (CHASSIS:LT91A) - LG TV Service Manual (repair manual). Page 66

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Check the PC Audio Cable
YES
Check MAIN B’D
C2015, C2016
MAIN B’D
C2015 (Right Sound)
C2016 (Left Sound)
signal ?
YES
NO
Replace MAIN B’D IC 100
RGB Video OK ?
YES
Check MAIN B’D JK401
Replace MAIN B’D JK401
NO
YES
Making 
Revision 
2009. 2 . 1
25/34
LCD TV
Symptom
RGB, HDMI-PC No Audio Problem
26~42LH2000
32~47LH3000/LH4000
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