No Sound - Samsung LE32C53 Series Service Manual

4. Troubleshooting

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
6
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/AV/PC/DVI to HDMI)
Yes
Does the sound data appear at
TP - COMP_SL_IN, COMP_SR_IN (COMP)
TP - AV_SL_IN, AV_SR_IN (AV)
TP - PC_SL_IN, PC_SR_IN (PC/DVI) ?
Yes
Does the DC B12VS
appear at TP - B12VS1?
Yes
Does the sound data appear at
TP - SPK_ L-, SPK_L+, SPK_R-, SPK_R+?
Yes
Replace speaker.
No
Input the sound source properly.
No
Check CN802, CN801, CN901.
Change the Main Assy.
No
Change the Main Assy.
Check I102 (SX1).
No
Check IC1301 (Sound AMP).
No
Please, Contact Tech support.