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47LD920 (CHASSIS:LD01I) - LG TV Service Manual (repair manual). Page 99

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Check the SCART Cable
YES
Check MAIN B’D
C229, C230
MAIN B’D
C229 (Right Sound)
C230 (Left Sound)
signal ?
YES
NO
Replace MAIN B’D IC 100
AV1 Video OK ?
YES
Check MAIN B’D JK1100
Replace MAIN B’D JK1100
NO
YES
Making 
Revision 
2009. 2 . 1
21/34
LCD TV
Symptom
AV1 No Audio Problem
<ALL MODELS>
26~42 LH2000
32~47LH3000/LH4000/LH5000
26LU5000
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