No sound from stereo / AMP ...

1526 Views 4 Replies 3 Participants Last post by crusoefieldteama, Jan 8, 2022

pkarmouche

Discussion Starter · May 1, 2005

Hi,

Picked up my 2001 M5 (with M-Audio/DSP) yesterday from service and the stereo worked perfectly, drove for about 1 hour and listened to FM, AM and CD during various parts of the drive.

This morning I have no sound. Actually I *do* have telephone audio and I *do* have the NAV voice however I do *not* have FM, AM nor CD.

Note that the orange "on" light does illuminate when I push the on/off button and the display reacts normally but I get no sound, not even a hiss if I turn the volume constantly higher, it's like the AMP is producing no sounds whatsoever. If I select CD the track shows up on the display and I can hear the CD changer swapping discs, but no sound.

I tried the following with no sucess:

* Checked all fuses in glove compartment and in the passenger side trunk area.
* Disconnecting the battery for about 30 seconds then reconnecting
* removing the stereo/nav screen unit from the dash and disconnecting/reconnecting both plugs
* unplugging /reconnecting all 3 plugs on the AMP (if the AMP is the large black box in trunk, vertically mounted).

What I cannot test is the radio unit (I think it's the radio unit); the silver colored box next to the "AMP" that says "Alpine". There is a large connector that is hard to reach that I cannot unplug. Also there is a fuse in there that I can't reach without removing this whole unit (and it appears that removing this unit is a major task).

I also don't know if there are any other fuses hidden (in the Amp)?

ANY HELP would be appreciated!

Paul

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SANguru

· #2 · May 1, 2005

if I remember correctly, it's only held on by 2 bolts. Remove the CD changer first to get it out of the way. It took less than 5 minutes for me when I had to remove that unit to plug in the speaker wires for my NAV TV. Sounds like a bad fuse on the unit. Good luck.

pkarmouche said:
Hi,

Picked up my 2001 M5 (with M-Audio/DSP) yesterday from service and the stereo worked perfectly, drove for about 1 hour and listened to FM, AM and CD during various parts of the drive.

This morning I have no sound. Actually I *do* have telephone audio and I *do* have the NAV voice however I do *not* have FM, AM nor CD.

Note that the orange "on" light does illuminate when I push the on/off button and the display reacts normally but I get no sound, not even a hiss if I turn the volume constantly higher, it's like the AMP is producing no sounds whatsoever. If I select CD the track shows up on the display and I can hear the CD changer swapping discs, but no sound.

I tried the following with no sucess:

* Checked all fuses in glove compartment and in the passenger side trunk area.
* Disconnecting the battery for about 30 seconds then reconnecting
* removing the stereo/nav screen unit from the dash and disconnecting/reconnecting both plugs
* unplugging /reconnecting all 3 plugs on the AMP (if the AMP is the large black box in trunk, vertically mounted).

What I cannot test is the radio unit (I think it's the radio unit); the silver colored box next to the "AMP" that says "Alpine". There is a large connector that is hard to reach that I cannot unplug. Also there is a fuse in there that I can't reach without removing this whole unit (and it appears that removing this unit is a major task).

I also don't know if there are any other fuses hidden (in the Amp)?

ANY HELP would be appreciated!

Paul

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pkarmouche

Discussion Starter · #3 · May 1, 2005

Thanks Sanguru,

Those two screws do remove the CD changer, but the AMP and the silver box (that I presume to be the radio tuner) are part of a complex maze of attachments. I think I'm going to have to figure how to get both of these boxes out to inspect them for fuses....

Paul

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pkarmouche

Discussion Starter · #4 · May 2, 2005

FIXED!

It was the "mute" lead for the cell phone, because of the sliding motion of the armrest the "mute" wire chaffed and grounded out... so the stereo thought I was always on the phone.

Paul

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crusoefieldteama

· #5 · Jan 8, 2022

hi guys im new to the forum , i have a BMW M5 S63 and have issues with the audio sound.
on the display screen the mute button is activated , i have tried to deactivate mute but to no avail.
any help will be greatly appreciated

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