50PX950-AA (CHASSIS:PA02B) - LG TV Service Manual (repair manual). Page 49

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< CVBS waveform – sample >
- Defend on the input signal.
Making 
전자 - 6-2
Revision 
PDP TV
Input
Block
Analog TV Video Problem
Check RF Cable
Check CVBS signal
TU600 #11 Pin
Replace Tuner(TU600)
Y
N
Check IC503 Output 
Voltage(L520)
Y
N
Y
Replace BCM(IC100)
Check 5V voltage
on TU600(Pin3)
3/15
2010. 8 . 13
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