LG 32LC5DC Service Manual page 21

4. In case of no sound
(1) Symptom
LED is green
Ø
Screen display but sound is not output.
Ø
(2) Check following
Is this problem occur
in some input(mode)?
Yes
Only HDMI is no sound?
Yes
Only RF is no sound?
Yes
Only AV/ component/
PC input is no sound?
No
Is the output signal
of the P400 normal?
No
Cable inserts well.
No
Check the
Tuner IN/OUT.
No
Is the cable
connected normal?
Yes
Is the IC1111
(MSP4450) output?
Yes
Replace Main board.
No
Is the cable
connetde normal.
Yes
Is the IC1111 (MSP4450)
output normal?
Yes
Replace Main board.
No
Cable inserts well.
No
Replace IC.
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No
Cable inserts well.
No
Replace IC.