Doepfer

Hi!

I have a problem with my eurorack system. 
when I connect A138 mixer to general mixer of my studio, the system make an high noise (zuuuuuuuuuuuuuuuuummmmm) though other modules aren't connect to A138.  
the same problem it is made with all three A138 mixers that I have, and with A106-1. 
if I connect the mixer to vca the problem disappared. 
what is the problem?
I use an home made wood case and doepfer A-100 DIY Kit #1 (I connect all component of kit be very careful). 

Thanks to all!
AS

Is channel one sending a voltage out maybe?
When nothing is plugged in channel one and you have the pot open it will
send a voltage out.
Try closing the pot and see if it's still making that sound.

greatings,

Ernst

On Tue, Apr 27, 2010 at 9:51 AM, AS <lupofuga@hotmail.it> wrote:

>
>
> Hi!
>
> I have a problem with my eurorack system.
> when I connect A138 mixer to general mixer of my studio, the system make an
> high noise (zuuuuuuuuuuuuuuuuummmmm) though other modules aren't connect to
> A138.
> the same problem it is made with all three A138 mixers that I have, and
> with A106-1.
> if I connect the mixer to vca the problem disappared.
> what is the problem?
> I use an home made wood case and doepfer A-100 DIY Kit #1 (I connect all
> component of kit be very careful).
>
> Thanks to all!
> AS
>
>  
>


[Non-text portions of this message have been removed]