Vintage Simmons Drums (UK) Users Group

The voltage is 12.5 volt not connected. Should be about 9 volt (8.8), and drops to 6.8 volt. I changed it on another sds9, and the problem is in the power supply. I am not sure were 9 volt is coming from for the Brown wire.

--- In Simmons_Drums@yahoogroups.com, "philmurr" <philmurr@...> wrote:
>
> If you unplug the multi-way connector from the main board and measure the voltage at the power supply end, what do you get (on initial power-up and then after a few minutes) ?
> 
> --- In Simmons_Drums@yahoogroups.com, "sarsipri" <alfco@> wrote:
> >
> > I have one SDS 9 with a power problem. The wire cable that goes to the mainboard, there is one brown wire with about 9 volt. After a few minutes drops to about 6 volt and all triggers go on. Can anybody check how much the output should be?
> >
>