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4. Troubleshooting
4-1-8. 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..
-
Diagnostics
6
7
Caution
Make sure to disconnect the power before working on the IP board.
4-22
Check the source and
check the connection of sound cable
(Comp/PC/DVI to HDMI)?
Yes
Does the sound data appear at
CN7005(AV R/L)
CN5004(COMP R/L)
CN5011(DVI/PC R/L)?
Yes
Does the DC B3.3V, B12V
appear at IC9002?
Yes
Does the I2C data appear at R4408?
Yes
Does the sound data appear at
TP - RP, RN (R +/-)
TP - LP, LN (L +/-)?
Yes
Replace speaker?
No
Input the sound source properly.
Check CN7005, CN5011, CN5004
No
Change the Main Assy
BN94-02990A
Change the Main Assy
No
BN94-02990A
Check IC9002 (Audio CODEC)
No
Change the Main Assy
BN94-02990A
Check IC4010 (Saturn4)
No
Check IC9002 (Sound AMP)
Change the Main Assy
BN94-02990A
No
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