Vintage Simmons Drums (UK) Users Group

make sure that the cards are properly seated in the back plane.  there is a little tab that is supposed to keep the cards aligned that easily falls out.  NEW ALLIANCE EAST!!!!

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New Alliance East - Mastering
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X :::: B :::: S 


     On Thursday, May 7, 2015 8:48 AM, "lackan110f@... [Simmons_Drums]" <Simmons_Drums@yahoogroups.com> wrote:
   

     Hi everybody!
I am new to this group, and the reason I am here is that I recently bought a SDSV-brain with 5 modules. I had a couple of questions and electronic obsession-Jesper thought it might be a good idea to pop them up here. 
First:I am triggering the SDSV with a +10V trig signal. But the DSDV prefers +15V. Since the trig inputs are wired with a 100kOhm to ground, I tought decreasing this resistor might lower the SDSV's need for 15V to 10V. 
Has anybody done this? What is a good value to aim for?
Second; I think that the mixer section might be faulty in some way since slot 4 triggers slot 6 as well. First I thought it was a mod of some sort but it isn't. And the sensitivity pots don't seem to do much either. 
But my question is - how does one removing the mixer section? It is multi-pin soldered to the back PCB and the trafo sits on the right wall? Its like a chinese puzzle… :-)
Thanks for reading this far, best regards Peter in Stockholm