4-17
4. Troubleshooting
4-1-9. No Sound
Symptom Video is normal but there is no sound..-
Major
checkpoints
When the speaker connectors are disconnected or damaged.
When the sound processing part of the Main Board is not functioning.
Speaker defect..
-
-
-
Diagnostics
Check IC3001 or Side-AV.
Change the main PCB ass’y or
side-AV assembly
No
Yes
Lamp(Backlight) Off, no sound.
Yes
Check the sound source and
check the connection of
sound cable?
No
Input a sound signal.
Check the connected cable.
Check the LVDS cable?
Replace the LCD panel?
Please, Contact Tech support
No
Does the signal appear at C3029~
C3036,C3007,C3008,R3022,R3023
(VIDEO2,COMP,PC,DVI,HP),
R3039~R3042 of IC3001?
Yes
!
Caution Make sure to disconnect the power before working on the IP board.
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