Sequential six-trak (was: smoke damage)

[Arthur Harrison]

I've hardly seen a mention of the Sequential "six-trak" 'till now on this
list!
I have one, and like it.  A good example of uP supervised analog circuitry,
IMHO!  Has anyone tried to clone this synth?  When I first purchased this
unit
(used) it needed one of the CEM voicing ICs replaced. Is this IC a relative
rarity,
and do you suppose I should stock a few spares just in case one goes bad
again?

-Art


-----Original Message-----
From: Sean Costello <costello at seanet.com>
To: Clarissa Fragile <wils0450 at itlabs.umn.edu>
Cc: Synth-DIY <synth-diy at mailhost.bpa.nl>
Date: Wednesday, December 09, 1998 3:34 PM
Subject: Re: smoke damage


>Clarissa Fragile wrote:
>>
>> I have an opportunity to get a couple of MMT-8's as a package, but one of
>> them has "some smoke damage" (I know, it couldn't be much vauger). Is
this
>> the kind of thing I want to stay away from, or is it an *easy* fix?
>
>Probably means "smoke has made switches that turn sequences on and off
>completely erratic, if not unusable."  These switches are fixable, or I
>think you can get replacements from Alesis.  I fixed similar swithces
>(on a Sequential Circuits SixTrak) with some sandpaper and alcohol (to
>sand away and clean off the non-conductive parts of the little plastic
>buttons that make up the switch), & then added some finely powdered
>pencil shavings (for added conductivity).
>
>Sean Costello
>