Vintage Simmons Drums (UK) Users Group

Thanks - one day I'll look into that stupid HH-module... 4556 and 4013 are 
almost as common as toilet paper! ;)

electronically yours, jesper
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www.electronic-obsession.se


----- Original Message ----- 
From: <michael.buchner@...>
To: <Simmons_Drums@yahoogroups.com>
Sent: Thursday, October 13, 2005 9:02 PM
Subject: [Simmons Drums] Re: SDSV Repair.


> Hi,
> my Name is Michael and I live in Germany. I may not be a reputable Service 
> Person, but I know the SDSV by Heart (I built one on my own 20 Years ago 
> because I couln't afford an Original, but today I have it, with all 
> available Modules), so I can give your Repairshop all necessary 
> Information. I have drawn a basic Signal Flow Schematics 20 Years ago, you 
> can download this at www.simmonsmuseum.com. You have a Problem with these 
> Preset-Switches, am I right? So I have to know: What is the Problem with 
> the Buttons? Are the Buttons themselves worn out (You have to press hard 
> or many Times to change the Presets) and you need only Spare-Parts (Only 
> one LED should be lit on the Module Front if you push a Button)? Or is the 
> LOGIC behind these Buttons the Problem (maybe one, two  or no LED is lit, 
> others gleaming, or you push Button for Preset 1 and the LEDs of Preset 
> f.e. 4 and 2 are lit together)? Then you have to change IC2 in most Cases 
> (4556) or IC 1 (4013). Both very cheap.
> M. Buchner
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