Analog Tv Audio Problem - LG 42PT250 Service Manual

Repair Process-Reference data
Input
PDP TV
Block
Check video output
Y
Check #3 on TU300 for 5V
Y
Check SIF signal C301
Y
Check SIF signal (C301)
Y
Follow procedure All source audio
trouble shooting
Y
Replace MSTAR IC (IC400)
©
Copyright

Analog TV Audio Problem

N
Follow procedure analog TV
video trouble shooting
N
Check IC605 output Voltage
N
Replace TU300
N
Check SIF line
Making
Revision
< SIF waveform – sample >
- Defend on the input signal.
A2-3
LGE Internal Use Only