LG 42LG30 - Page 16

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Digital TV Video
Check RF Cable
Check IC400(LGDT) Output
-. AR401, AR402
Y
Check Tuner 5V Power
IC710 #3 Pin
Replace IC710
Y
N
Y
Replace IC400
N
Check IF_P/N Signal
Bad Tuner. Replace Tuner.
Check Demodulator Input Clock
X400 (25MHz)
Replace it X400
N
Y
N
Check Mstar LVDS output
Replace Mstar(IC100)
N
Y