Read LG 19LV2500-UA (CHASSIS:LA01T) Service Manual online
9. Digital TV Audio
Check RF Cable & Signal
Follow procedure
‘8. All source audio’
trouble shooting guide.
ok
Check Tuner 3.3V Power
L3703
Replace L3703
Check Tuner 1.2V Power
IC3703 2 pin : 1.2V
Check IF_P/N Signal
TU3702 17/18 Pin
Replace IC3703
Check Tuner 5V Power
L3702
ok
ok
ok
ok
No
No
No
No
Bad Tuner. Replace Tuner.
Check IC7952, IC7861
Replace IC7952, IC7861
No
Replace L3702
ok
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