No Sound - Samsung UE40D500 BW Series Service Manual

4. Troubleshooting

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.
-
7
Diagnostics
Caution Make sure to disconnect the power before working on the IP board.
4-16
Check the source and
check the connection of sound cable
(Comp/PC/DVI to HDMI) ?
Yes
Does the sound data appear at
PIN - COMP1_SR_IN,
COMP1_SL_IN
VIA - PC_DVI_SR_IN,
PC_DVI_SL_IN (PC/DVI) ?
Yes
Does the DC B12VS appear at
CN201 PIN 7,9 - B12VS_PW ?
Yes
Does the sound data appear at
TP - SPK_ L-, SPK_L+, SPK_R-, SPK_R+ ?
Yes
Replace speaker ?
TBD
No
Input the sound source properly.
Check CN503, CN402.
No
Change the Main Assy.
No
Change the Main Assy.
Check IC1001 (X6).
No
Change the Main Assy.
No Please, Contact Tech support.