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60PS8000-ZA (CHASSIS:PD91A) - LG TV Service Manual (repair manual). Page 71

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Making 
Revision 
2009. 2 . 1
PDP TV
Input
Block
All Input Audio Problem
Make sure you can’t hear any audio
Check SCL,SDA
R1235, 1236
Replace R1235, 1236
Check IC701 Power 
17V(C721), 3.3V(R718)
Check  17V (P800 #1,2),
3.3V (IC701 #21, 36)
Replace IC701
Check Mstar I2S Output
R231, 232, 233, 234
Replace IC100.
Check speaker for damage.
Check IC701 Status 
Reset(#31) is High?
Check 
Reset (R724)
:They must be High (3.3V)
Replace the Speaker
Y
Y
Y
Y
Y
Y
N
N
N
N
N
8/14
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