50PX950-AA (CHASSIS:PA02B) - LG TV Service Manual (repair manual). Page 58

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< SPDIF waveform – sample >
- Defend on the input signal.
Making 
전자 - 6-2
Revision 
PDP TV
Input
Block
Optical Audio Problem
N
Check  Signal (JK1000  #3)
Check SPDIF signal (R1051)
Replace BCM(IC100)
Check 5V #2 on JK1003
Y
12/15
N
Check Q501 Output (L516)
Y
2010. 8 . 13
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