4-16
4. Troubleshooting
4-1-7. 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 JA5004/JA5005/JA5001/JA4001
Change the Main Assy
BN94-02709A
No
Yes
Does the DC B3.3VD, B13VS
appear at R2013, BD1006?
No
Yes
Check the source and
check the connection of sound cable
(Comp/PC/DVI to HDMI).
Yes
Change the Main Assy
BN94-02709A
Does the sound data appear at
R5032, R5031(AV2 R/L), R5036,
R5037(AV1 R/L), R5017, R5018
(Comp1 R/L), R5009, R5010
(Comp2 R/L). R4012, R4014 (PC R/L)?
No
Input the sound source properly.
Yes
Replace speaker?
Please, Contact Tech support
No
Does the sound data appear at
C2056, C2054 (R +/-)
C2053, C2055 (L +/-)?
No
Check IC6003 (SEMS03)
Check IC2002 (Sound AMP)
Change the Main Assy
BN94-02709A
Caution Make sure to disconnect the power before working on the IP board.
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