LG 42PC51, Руководство по обслуживанию

Страница: 22 / 40

14. No Sound
(1) Symptom
1) LED is green.
2) There is a picture but no sound.
(2) Follow check
- 22 -
Is there sound in any
mode?
Is the speaker
on?
Yes Yes
Is the speaker
cable normal?
Yes
Yes
Is there no sound
only for HDMI?
Yes
Is there no
sound only AV
/COM2/PC?
Is the output
of IC600(R607, R608)
normal?
Yes
Is there no sound
only for RF?
No
No
No
No
Download the EDID data.
Set speaker on
in the menu.
No
Replace the
IC600
No
Check the Speaker
cable
No
Is the IC500
operating normal?
Replace the IC500
No
Yes
Is the IC601
operating normal?
Replace the IC601
Replace the VSC BD
Yes
Check the signal after IC600.
refer to circuit diagram.
Check the Tuner In/Out.
No