Read LG 42LD450 (CHASSIS:LT01B) Service Manual online
14. EARPHONE Audio
Check AV Cable for damage
for damage or open conductor
Check JK3301
& Signal Line
ok
ok
No
Replace Jack
Follow procedure
‘8. All source audio’
trouble shooting guide.
Click on the first or last page to see other 42LD450 (CHASSIS:LT01B) service manuals if exist.