No Sound - Samsung LN32A450C1D Service Manual

4-1-9. No Sound

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