[sdiy] Heat and Omni2's - a rant

[Dana Scott]

COSMOS was RCA's term for CMOS.
If you need a new copy of the service manual , I can help. I have a manual in new condition that I could photocopy.  I used to be
the world's foremost authority on the repair of Omni's.
Haven't touched one in years now.  In my basement I have the original hand wired breadboard of the Omni. It still played the last
time I tried it.
-Dana

----- Original Message -----
From: "Tom Arnold" <xyzzy at sysabend.org>


> So, its been in the 90s here in the lovely temperate SF Bay Area and the
> last couple nights I've been doing battle with an Arp Omni2.  Sofar I've
> replaced *every* tant cap in it with an NP electrolytic. except for the
> few cases where space was a real issue and I used a modern fresh new tant
> unstead.  Keyboard now plays correctly without extra noise and sticking
> notes.  Still have one note that doesnt play, but I havent looked into it
> directly yet. And the Synth section doesnt make any noise and the 8th
> generation photocopy service manual gives me a headache when I try to trace
> back where its gets its signal from.  I'm sure I'll find some crufty
> CMOS in there when I do find it.  I've sworn not to dig into my sequencer
> project until I've gotten this Arp working.  Still dont know if i'm going
> to keep it.
>
> Anyway, for some actual content to this message...
> What in the heck is COSMOS?  Kinda hard to do a websearch on that term and
> get anything relevent.  The Omni manual makes some reference to COSMOS
> process ICs.  I thought it might be some weird term for CMOS but they also
> use CMOS liberally too.
>
> --
>  ------------------------------------------------------------------------
>  - Tom Arnold -       When I was small, I was in love,                  -
>  - Sysabend   -       In love with everything.                          -
>  - CareTaker  -       And now there's only you...                       -
>  --------------         -- Thomas Dolby, "Cloudburst At Shingle Street" -
>