S-Class (W220) 1999-2006: S 320 CDI, S 320, S430, S 500, S 600

no sound from speakers.

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Old 01-04-2008, 01:49 PM
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Question no sound from speakers.

Hi there I have a questions . My factory sound system powers on and everything seems to be working except there is no sound, sometimes it comes on, everything works just fine radio, navi and tape . whenever there is no sound it won't recognize cd changer, ( it says NO CD CHANGER ) . Does
anyone had this before ????

tnx in advance

Last edited by dav818; 01-04-2008 at 03:38 PM.
Old 01-04-2008, 04:15 PM
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anyone ???????
Old 01-04-2008, 06:57 PM
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maybe the factory amp is blown
Old 01-04-2008, 09:04 PM
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its not it. cuz sometimes it works . and i cant figure out where the problem is
Old 01-04-2008, 09:15 PM
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Originally Posted by dav818
its not it. cuz sometimes it works . and i cant figure out where the problem is
Amps can go on and off.
Old 01-04-2008, 09:24 PM
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Originally Posted by mugsy415
Amps can go on and off.
where is it located?
Old 01-04-2008, 10:55 PM
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Originally Posted by dav818
where is it located?
left side of the trunk, like where the battery is on the other side its sorta attached to the changer or underneath it i forget
Old 01-04-2008, 10:57 PM
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Originally Posted by dav818
Hi there I have a questions . My factory sound system powers on and everything seems to be working except there is no sound, sometimes it comes on, everything works just fine radio, navi and tape . whenever there is no sound it won't recognize cd changer, ( it says NO CD CHANGER ) . Does
anyone had this before ????

tnx in advance
Are you saying this only happens in conjuction with trying to use the CD player? Sounds like the CD player may be bad if it only happens in that mode. Otherwise, it does seem the amp may be the problem (or both).
Old 01-05-2008, 05:08 AM
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when there is no sound it doesn't see the changer it says no phone and no changer but whenever sound comes on it sees the changer
Old 01-05-2008, 07:53 AM
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Originally Posted by mugsy415
Amps can go on and off.
WHAT HE SAID AND IF YOU HAVE A PHONE IN THE CAR CHECK THE VOICE CONTROL MODULE
Old 01-05-2008, 02:46 PM
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where is that module at ?
Old 01-06-2008, 04:05 AM
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when it was workin' today it was playin cd at really slow speed . so what do u think is it cd changer ?

Last edited by dav818; 01-06-2008 at 02:54 PM.
Old 01-07-2008, 02:04 PM
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anyone any ideas ?
Old 01-07-2008, 02:33 PM
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dav818,

It sounds as if the fiber optic connection at your CDC is loose. It's the one with bright orange leads. Disconnection of those leads can cause your bus (fiber optic loop, which is connected to your COMAND) to lose all input from everything on it - including your amp.

You might check all of the fiber optic connections, but start with the CDC. The phone bulletins at http://home.earthlink.net/~phdwebsit..._bulletins.htm will help you locate components and connectors.

The loose connector would not explain the slow playback you described. If the CDC has gone down altogether, it could take out the rest of the loop; you'd have to bypass the CDC until you replaced it, to get your other audio back.

Last edited by Skylaw; 01-07-2008 at 02:35 PM.
Old 01-08-2008, 04:02 PM
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is it possible that there is something wrong with my Comand ?
Old 01-09-2008, 06:45 AM
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Yes, it's possible - but impossible to tell without hooking it up to a diagnostics computer. Your dealer can do that.
Old 01-09-2008, 09:35 AM
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Originally Posted by dav818
Hi there I have a questions . My factory sound system powers on and everything seems to be working except there is no sound, sometimes it comes on, everything works just fine radio, navi and tape . whenever there is no sound it won't recognize cd changer, ( it says NO CD CHANGER ) . Does
anyone had this before ????

tnx in advance
The best part of this car is the sound system
Old 01-09-2008, 11:38 AM
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Originally Posted by Gondon
The best part of this car is the sound system
tnx for pointing out

Last edited by dav818; 01-09-2008 at 11:50 AM.

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