[Skylaw]

Masarwa99, see COMPONENT LEVEL REPAIR OF MERCEDES ELECTRONICS AND...

 

[cakwiatkowski]

Hello I do repairs on w221 amps in case you what to fix it. Sent from my SM-N950U using Tapatalk

Do you rebuild amp?

 

[Marks54]

Alexander63, do you still do repairs to w221 amps? If so I need your service.

 

[golemjohnny]

No sound?

Sent from my SM-G998U using Tapatalk

are you still doing repairs? If so how do I cntact you?

 

[KKHBenz]

Just to add to this thread, they are cross-compatible (Pre-facelift and Facelift). I bought one from a 2007 untested for $100 at my local junkyard and it worked on my 2011. Flipped the fan (So the air blows outwards, not inwards) to fix the amp issue and works like a charm.

 

[silarrow]

Just to add to this thread, they are cross-compatible (Pre-facelift and Facelift). I bought one from a 2007 untested for $100 at my local junkyard and it worked on my 2011. Flipped the fan (So the air blows outwards, not inwards) to fix the amp issue and works like a charm.
[/QUOTE
What ? What ? and what ? Ya got 07 amp untested and all you did was reverse all cooling fans outwards in purpose of getting hot air out instead cool air in then it works every single time when audio turn on ?
If this is a true statement then German engineering is not a greatest

 

[silarrow]

No sound?

Sent from my SM-G998U using Tapatalk

alexender63 : Are you serious repare man on these trouble amps ? You are sure to understand our members has few and same common problems with this amp so let's straight arrow here by tell us what your specialty and flat rate including flat rate on shipping return. PLEASE and THANK YOU

 

[KKHBenz]

Yes. As well, when H/K were still offering repairs, they were returned with the fan flipped.

The issue was dust build up over time on the inside of the module which would cause a short. The fix (after the fried/faulty chips have been replaced) was to have the fan blow outward and keep the dust away from the sensitive amp.

Just because something was German engineered doesn’t mean it’s perfect. Look at all the issues German cars face. Nothing is perfect