-Thanks for the reply, Florian!
i tested it with the a 118 noise module, when the output is straight
to the mixer there s no hum, it only appears when i connect this
signal to my VCA from another frame i have , which is powered by a
standard a100 power supply.





-- In Doepfer_a100@yahoogroups.com , Florian Anwander
<Florian.Anwander@...> wrote:

>
> Hi Miguel
>
> > i just installed a new DIY kit 2, the cheaper one, inside a new frame.
> > i get an annoyimg electrical drone when i connect the output of any
> > module installed there to my mixer.
> > the red leds of the bus board and the modules are OK.
> Try connecting an earphone or headphone with 3.5mm jack to the

output of

> a module (and do not connect anything else). You will hear of course
> only on side of the earphone, but it may show you whether the hum is
> there or not. If it is there, something is wrong with the diy kit (or
> how you connected it). If the hum is not there, then you have a problem
> with the electric relation of this A-100 frame and the mixer.
>
> Florian
>