No Sound - Samsung LA37C630 Series Service Manual

4-1-6. No Sound

Symptom Picture is normal But no Sound
-
Check the RF Source
-
Major Check the IC6001(SDP84)
-
checkpoints
This may be happened when LVDS Cable is Connected between Panel and Main Board ,
-
But Sound cable is disconnected.
1
Diagnostics
2
3
Caution Make sure to disconnect the power before working on the IP board.
Picture is display, no sound.
Yes
Does the signal appear at pin
#1 ~#9 , #33~#44 , #61~#64
around IC2001?
Yes
Check the DC 12V and 9V
at BD2012 and C2002?
Yes
Does the signal appear at
Pin6 , Pin9 , Pin10 ,
Pin13 of IC2002?
Yes
Replace the speaker ass'y?
Connect a sound cable.
No
control a volume.
Check a connection harness and
No
headphone jack./Side AV
Check Sound Processor
Check a B12VS, B9V Line.
No
Change a main PCB ass'y.
No
Please, Contact Tech support.
4. Troubleshooting
IC2001
4-11