Read LG 42LA6150 (CHASSIS:LA33B) Service Manual online
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8. Digital/Analog TV Audio
Check RF Cable & Signal
Follow procedure
‘7. All source audio’
trouble shooting guide.
ok
Check Tuner 3.3V Power
L3703
Replace L3703
Check Tuner 1.8V Power
IC3703 2 pin : 1.8V
Check IF_P/N Signal
TU3700 10/11 Pin
Replace IC3703
ok
ok
ok
No
No
No
Bad Tuner. Replace Tuner.
10. Component Audio
Check Component Cable
for damage or open conductor.
Check JK1702 Signal Line
R1714,R1715
ok
ok
No
Replace Jack
9. AV Audio
Check AV Cable for damage
for damage or open conductor
Check JK1702 Signal Line
R1714,R1715
ok
ok
No
Replace Jack
Follow procedure
‘7. All source audio’
trouble shooting guide.
Follow procedure
‘7. All source audio’
trouble shooting guide.
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