Read LG 42LS3400 / 42LS349C (CHASSIS:LA25C / LA21B) Service Manual online
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11. AV Audio
12. Component Audio
13. RGB Audio
Check AV Cable for damage
for damage or open conductor
Check JK1604 & Signal Line
ok
ok
No
Replace Jack
Follow procedure
‘8. All source audio’
trouble shooting guide.
Check Component Cable
for damage or open conductor.
Check JK1601, JK1603
& Signal Line
ok
ok
No
Replace Jack
Follow procedure
‘8. All source audio’
trouble shooting guide.
Check Cable conductors
for damage or open conductor
Check JK1102 & Signal Line
ok
No
ok
Replace Jack
Follow procedure
‘8. All source audio’
trouble shooting guide.
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