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9. Digital TV Audio
Check RF Cable & Signal
ok
Check Tuner No.3 pin
(5V Power)
ok
Check Tuner No 14 pin
(3.3V Power)
ok
Check Tuner No 13 pin
(1.2V Power )
ok
Check IF_P/N Signal
TU5001 17/18 Pin
ok
Check Mstar LVDS Output
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Only for training and service purposes
No
Check IC406
No
Check IC405
No
Check IC3703
No
Bad Tuner. Replace Tuner.
No
Replace Mstar(IC101) or Main Board.
No
Replace IC406
ok
Replace Tuner
No
Replace IC405
ok
Replace Tuner
No
Replace IC3703
ok
Replace Tuner
LGE Internal Use Only
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