PLAN B analog blog

Tony - the faceplate of the Model 15 has to be grounded.  Ground the
rails, this will ground the faceplates moutned to it.

- P


--- In PLAN_B_analog_blog@yahoogroups.com, "dematteoanthony"
<dongchi1@...> wrote:
>
> i purchased a model 15 used recently.
> 
> i am experiencing what sounds like a ground hum.
> 
> any suggestions would be much appreciated.
> 
> i am using the doepfer d.i.y power supply #1 i believe, its the one
> with 2 busboards.
> 
>  the case is made of wood w/ metal rails.
> 
> i have unhooked all other modules and tried powering the module as far
> away from the power supply as possible w/ no luck.
> 
> unfortanettly this is the only analog osc i have so i cant tell if its
> an issue w/ the power or the module itself.
> 
> i know its not the electrical in my room as i have brought the system
> to other places and received the same results.
> 
> any suggestions will be greatly appreciated.
> 
> thanks, tony
>