LG 60PB5600 Service Manual page 35

4. Analog TV Video Trouble Shooting
Check RF Cable
Y
Check Tuner Power Voltage
(3.3V, 1.2V)
Y
Check IF Signal waveform and signal
strength & Quality
Y
Maybe Mstar IC
has problems
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Only for training and service purposes
N
Replace one of
Bead & Recheck
N
Maybe Tuner has problems
LGE Internal Use Only