No Sound - LG 32LG30R Service Manual

10. No Sound

(1) Symptom
1) LED is green
2) Screen display but sound is not output.
(2) Check process
All input(mode)
is no sound.
Yes
All input(mode)
is no sound.
Yes
Only AV/COM2/PC
input is no sound.
Yes
Only RF is no sound.
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Only for training and service purposes
No
No
Download the
EDID data.
No
Is the output of
IC600 normal?
Yes
Check the signal after
IC600 refer to circuit
diagram.
No
Check the Tuner In/Out.
Is the speaker
on it menu?
Is the speaker
cable normal?
Yes
No
Replace IC600
Is IC801 operated
normality?
Yes
Is IC601 operated
normality?
Yes
Replace Main B/D.
- 18 -
No
Set on speaker
in menu.
Yes
No
Check the Speaker
cable.
No
Replace IC801
No
Replace IC601
LGE Internal Use Only