LG 60PZ550 Service Manual page 62

Analog TV Audio Trouble Shooting
Check video output
Y
Check TU1400 (pin3) for 5V
Y
Check SIF signal (TU1400 #9)
Y
Check SIF signal (R1439)
Y
Follow procedure All source audio trouble
shooting (on page 25)
Y
Replace BCM3549XS (IC501)
Great Company Great People
Follow procedure analog TV video
N
trouble shooting (on page 15)
N
Replace IC404 or IC406
N
Replace Tuner
N
Check SIF line
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< SIF waveform – sample >
- Defend on the input signal.