I changed back to 0,047uf. Now the snares Accent is back to normal again.
DO NOT USE 0,47UF!

Seems like that all instruments have the Accent tied to ground with a Cap of .47µ on the schematics. It's probably there because Vincent designed it like that due to the difference of his sequencer and the original. Question is why? And if not what is the value? Is this causing the issues reported ...

I changed the snares c163 to the new value mentioned 0.47 uf.
Now the accent is all weird.

I failed this one. My BD sounds like crap now. However the buzz is gone. I did not cut the trace at IC11... is that my fault? *Update* Cut the trace at ic 11.... now it sounds better. I used another source for the op amp since I cut the legs on the old one to get it out. I dunno if its this one that...

Why use sockets? Isn't it just easier to just desolder one leg from the two transistors and bend it up?
Clip one leg of the IC and bend it up?

Can someone also post a better picture on the cut at the IC part?

Guys, follow the trace on the pic above and you will understand how to bypass the path that is cut

But, I'm also wondering on which side to do the cuts?
How deep is enough and can i damage something if I go "too deep"?

Data Jam wrote:since the update i have some sync issues. running in slave mode, if i switch between play and step mode, it "jumps" or slows down if kept pressed, after releasing it will catch up and is in sync again.
next time i have it running i check if this is in master mode too.

Same here.

Data Jam wrote:its not really a lot noise, just some noise that you only really hear if nothing is playing

True that. Same here and I bet all have this.
All people have the BD buzz.
All people have the SD noise.

Most people just dont use their ears to listen for it

Clever! Somebody should give it a try on the Nava.

Same bug/problem here.