60PJ101C-WA, 60PJ102C-WA, 60PJ103C-WA, 60PJ104C-WA (CHASSIS:PC01A) - LG TV Service Manual (repair manual). Page 62

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Customer Oriented R&D
Breakthrough
10. Component / RGB / DVI Audio Trouble Shooting
Y
Check Jack JK1000/JK1003
N
Y
Replace Jack
Check Video Output
N
Follow procedure external input 
video trouble shooting
Y
Follow procedure All source audio 
trouble shooting
N
Maybe Mstar S7 audio block has 
problems. Replace It
Check Signal
C236/C237/C244/C245
N
Replace one of
C236/C237/C244/C245
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