No Sound (A Type) - Samsung UN32C4000PD Service Manual

4-1-9. No Sound (A Type)

Symptom Video is normal but there is no sound..
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When the speaker connectors are disconnected or damaged.
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Major
When the sound processing part of the Main Board is not functioning.
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checkpoints
Speaker defect..
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7
Diagnostics
Caution Make sure to disconnect the power before working on the IP board.
Check the source and
check the connection of sound cable
(Comp/PC/DVI to HDMI) ?
Yes
Does the sound data appear at
TP - COMP1_SR, COMP1_SL (Comp R/L)
TP - 912, 913 (PC/DVI R/L)
TP - MONITOR_R, MONITOR_L
(MONITOR OUT R/L) ?
Yes
Does the DC B3.3V, B12VS
appear at BD213V, TP- B13VS?
Yes
Does the sound data appear at
TP - L-, L+, R-, R+ ?
Yes
Replace speaker ?
TBD
No
Input the sound source properly.
Check CN701, CN902, CN1201.
No
Change the Main Assy.
No
Change the Main Assy.
Check IC301 (SX1).
No
Check IC1202 (Sound AMP).
Change the Main Assy.
No
Please, Contact Tech support.
4. Troubleshooting
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