Vintage Simmons Drums (UK) Users Group

--- 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.