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LGE Internal Use OnlyCopyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Yes
No
Set on speaker on menu.
Download the EDID data.
Check the Tuner in/Out.
No
Check th Speaker cable.
No
Replace IC100.
No
Replace IC1000.
Replace main board.
No
Yes
No
No
All input is no sound?
Only HDMI is
no Sound?
Only RF or DTV
is no sound?
Is the speaker
“on” on menu?
Is the Speaker
cable normal?
10. No Sound
(1) Symptom
1) LED is blue
2) Screen display but sound is not output.
(2) Check process
Yes
IC100 operate
normally?
Yes
IC1000 operate
normally?
Yes
Yes
Change Main bord. S/W download and set White Balance value.
Before change Main Board,
Check S/W version and White Balance value.
* Caution