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LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Set on speaker
in menu.
Download the
EDID data.
Check the signal after
IC600 refer to circuit
diagram.
No
No
No
Check the Tuner In/Out.
No
No
Check the Speaker
cable.
No
Replace IC600
No
Replace IC801
No
Yes
Yes
All input(mode)
is no sound.
All input(mode)
is no sound.
Is the speaker
cable normal?
Is the speaker
on it menu?
Yes
Only AV/COM2/PC
input is no sound.
Is the output of
IC600 normal?
Yes
Yes
Only RF is no sound.
Yes
Is IC801 operated
normality?
Yes
Replace IC601
Replace Main B/D.
No
Is IC601 operated
normality?
Yes
10. No Sound
(1) Symptom
1) LED is green
2) Screen display but sound is not output.
(2) Check process
