Vintage Simmons Drums (UK) Users Group

Ok, only to make sure there are no misunderstandings: Check, if you are able to change the SOUNDS, meaning: Are the vertical knobs working? If not, IC50 is dead (Input mux). It is no problem to get you the schematics. I have the best SDS9 schematics ever drawn, from Thierry EPPHERRE, a french Simmons specialist. I need your adress: mail it to: buchnerelectronics@...
(In case you are not into electronics: IC means "integrated circuit", a small flat black box with a lot of silver feet, soldered onto the "motherboard" of SDS9. IC 50 is its number as an electronic part inside the SDS9 labelled white on the printed circuit board. It is located on the left side of the vertical control knob row, medium size. On its top you'll find its number like CD4067. It costs a little more than 1 Euro).
Again, good luck.

  ----- Original Message ----- 
  From: db13401992 
  To: Simmons_Drums@yahoogroups.com 
  Sent: Saturday, December 27, 2008 8:09 PM
  Subject: Re: [Simmons Drums] SDS9 HELP!


  --- In Simmons_Drums@yahoogroups.com, "Michael Buchner" 
  <buchnerelectronics@...> wrote:
  >
  > Check, while Autotrigger is running, if you can alter the values with 
  audible result. If this is not possible, change IC50, a 4067 working as 
  multiplexer. If it IS possible: Looks like IC19, a 4051, is dead. This 
  one is plexing the 6 pad inputs.
  > Good Luck
  > Michael

  Thanks Michael, While Aototrigger is running I can't adjust any values, 
  like the dynamics or speed pots. Because I don't have a schematic, 
  what/where is the "IC50" that needs to be changed?
  Thanks.



   

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