LG 55LV5400 (CHASSIS:LA12E) Service Manual ▷ View online
12. Trouble shooting - No audio (Component)
Check Component Cable
for damage or open conductor.
Check JK1105 & 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 JK804 & Signal path
ok
No
ok
Replace Jack or components
Follow procedure
‘8. All source audio’
trouble shooting guide.
13. Trouble shooting - No audio (RGB-PC)
Check SPDIF Cable
Check JK802
SPDIF_OUT Signal(5V)
ok
No
Replace Jack
14. Trouble shooting - No audio (SPDIF)
ok
Replace IC101
15. Trouble shooting - No audio (Head phone audio out)
Check Head phone Cable
for damage or open conductor
ok
ok
Check Earphone AMP Mute
(Pin 19)
Check Audio OSD
(Audio OSD active or inactive mode?)
Check R821 & R822, JK803
No(active)
Check Earphone output
(Pin 5, 16)
ok
No
Replace IC804 TPA6132A
ok
Follow procedure & refer to Audio signal block
Diagram
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