Archive of the former Yahoo!Groups mailing list: Vintage Simmons Drums (UK) Users Group
Subject: Re: SDS V - Card won't change settings
From: Richard Warland <warlandr63@...>
Date: 2015-10-25
It generally is caused by a failure of one of the following
IC1 (CD4013)
IC2 (CD4556)
IC3 (CD4011)
Easy fix if you do service work otherwise take it to someone who knows
what they are doing