W221 Bang and Olufsen no sound

[S350L]

Hi All

I have a 2011 W221 BlueTec with the Bang and Olufsen upgrade with rear entertainment. I have no sound at all from any AV or Nav and I've noticed that there is no illumination on my door tweeters.

I've read somewhere that because of the position of the amp, it gets coked up and dies, which could be the cause here, however, is it also possible to be a fuse? I've checked the fuse diagram but can't see one listed.

Has anyone else had this issue? Any fixes or suggestions?


Thx in advance

 

[BRW707]

That’s funny. I have the same car, and have almost the same issue. My stereo works, but only sound in the front, no bass, no tweeters/lights. Fault code D72F, ”sound amp and digital sound processor can’t communicate or are incompatible”.
I will try to get to the amp and the processor (I guess both are in the rear compartment behind the cloth/lining.
I would think it is nothing more then a cold solder or an IC or whatever that needs re- sondering -placing.
Will start searching for companies that know how to fix electronics and have a chat with them.