S-Class (W221) 2007-2013: S 320 CDI, S 350, S 450, S 500, S 550, S 420 CDI, S 600

circuit diagram

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Old 11-05-2018, 12:36 AM
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S 320 CDIL W221
circuit diagram

Can you please help me get a circuit diagram for the Becker Harman Kardon Logic 7 amplifier BE7021 e.g. for the 221 Mercedes Part No A 221 820 87 89, A 221 870 50 89, A 221 870 77 89, etc? Or can you help me find someone who would repair it for a reasonable price? For the circuit diagram in return I could organise someone who would help all victims of such broken amplifiers etc to repair them for probably cheaper than anyone else.
Thanks for your help
Dr Georg UITZ uitz@lawdrivein.at +4369910077515 (is mine but not working for the next 3 weeks), +4367762922694, +436764556759
Old 11-05-2018, 12:30 PM
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2006 W221 S500L
I wish i could help you.
All i know is that to repair these amps, usually the firmware needs to be re-flashed.

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