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      07-20-2013, 06:57 AM   #1
Marklorenzo
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Drives: 330i
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330i amp sound issues

Hello all. I have a 2006 330i with regular professional radio no idrive. Does have logic 7 amp. Decided one day to hit the SOS button on the way home from a trip to find out what its all about. Park car. Next day no sound out of speakers. I still have sos function and sound but no music. Lost all bluetooth connection. First instinct was to google my problem. FoundFoundany threads about replacing the logic 7 amp. Found a wrecked 330i and replaced. Still same issue. Read mixed emotions about reprogramming for amp. The amp I bought is the exact same kind and out of the same exact year and model. So far I have checked and pulled all radio and phone fuses. Disconnected negative side of battery. And replaced amp. Still no luck. Dealer wants to charge 150 $ just too look at it. Out of warranty also
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      07-25-2013, 08:54 PM   #2
Marklorenzo
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      07-25-2013, 09:25 PM   #3
ctuna
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You are much more likely to find answers here.

http://www.e90post.com/forums/forumdisplay.php?f=27

I think you need to start out with a scan for error codes with a
scanner or coding setup capable or reading all the BMW Codes.

You could also use Most Bus jumpers to bypass modules to see if
it comes back to life. There are several modules that hang of the Most
Bus Ring and if any one fails the anything on the ring is useless.
The thing that comes to mind it the TCU module. (Telephone Control Unit)
There is an Entertainment pdf and an electrical theory pdf in the following
links you should read the parts about the Most Bus.

Also FYI

BMW stereo types
http://www.e90post.com/forums/showthread.php?t=352586
http://www.e90post.com/forums/attach...2&d=1266451970
http://www.e90post.com/forums/attach...2&d=1260829447
http://www.e90post.com/forums/showthread.php?t=343673
http://www.e90post.com/forums/showthread.php?t=138949
http://www.e90post.com/forums/attach...2&d=1260829447
http://www.e90post.com/forums/attach...1&d=1209780605
http://www.e90post.com/forums/showthread.php?t=641323
http://www.e90post.com/forums/attach...1&d=1209780865
http://www.bawarec.ru/manuals/3er/e9...3er-e90-12.pdf
http://www.musicarnw.com/page-2/
http://www.e90post.com/forums/attach...4&d=1278871872

Last edited by ctuna; 07-25-2013 at 09:30 PM.
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