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4-1-7. No Sound
Symptom
Video is normal but there is no sound..
-
When the speaker connectors are disconnected or damaged.
-
Major
When the sound processing part of the Main Board is not functioning.
-
checkpoints
Speaker defect..
-
check the connection of sound cable
(Comp1 R/L). R4012, R4011 (PC R/L)?
Diagnostics
Caution
Make sure to disconnect the power before working on the IP board.
Check the source and
(Comp/PC/DVI to HDMI).
Yes
Does the sound data appear at
R5032, R5031(AV2 R/L), R5059,
R5210(AV1 R/L), R5046, R5047
Yes
Does the DC B3.3VD, B13VS
appear at R2013, BD1006?
Yes
Does the sound data appear at
C2056, C2054 (R +/-)
C2053, C2055 (L +/-)?
Yes
Replace speaker?
No
Input the sound source properly.
No
Check JA5004/JA5005/JA5001/JA4001
Change the Main Assy
No
Change the Main Assy
Check IC6003 (SEMS03)
No
Check IC2002 (Sound AMP)
Change the Main Assy
No
Please, Contact Tech support
4. Troubleshooting
4-19
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