Vintage Simmons Drums (UK) Users Group

Nothing can be damaged when inserting batteries backwards. So, I think, the grainy sound comes from another point: The ZIF.
I do it like this: Insert the EPROM and close the ZIF socket only like half, so that you can move the EPROM from side to side. If you do this a few times, you remove stains and dirt from the ZIFs contacts and from the EPROM legs.

Good luck.
  ----- Original Message ----- 
  From: Brian Horton 
  To: Simmons_Drums@yahoogroups.com 
  Sent: Wednesday, January 25, 2012 7:49 AM
  Subject: [Simmons Drums] sds 1


    
  placed the batteries backwards in the sds 1 because i could not find the manual,now the sample sound grainy or distorted.Has anyone had this happen before and could tell ne what parts to replace as buying schematics are almost impossible to purchase.thanks



  

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