Hi Doug,
Long story short : if you are pretty good with the soldering iron I
would start replacing the 4000 series CMOS chips , make sockets and
put additional bypass capacitors. Replace systematically all
capacitors starting with the power supply. That way you could rest a
sure that the Yamaha custom chips are a bit out of the danger zone.
How ever this is not a ten minutes job . Take your time as it is
worth the work and effort. If you have questions we are glad to help
you.
Kind Regards
Csaba Zvekan
On Feb 20, 2011, at 8:42 AM, effegee wrote:
> Hi. I'm new here. I just acquired a CS-80 that originally belonged
> to Oscar Peterson, who sold it when he put together a Synclavier
> system. The guy I bought it from has played on records for Bon
> Jovi, Aerosmith, the Cult, Scorpions, etc. He had the CS-80 for 16
> years, keeping it in the studio and storage, and never once had it
> tuned. I'm amazed, because the tuning sounds great. There is one
> dead (or barely audible) voice on Ch. I, but everything else seems
> in working order, and it sounds great. This is the first CS-80 I've
> ever played and I'm having fun exploring is sonic and expressive
> possibilities. I'm planning on having a synth tech a few hours away
> in Seattle work on the dead voice and tune it, and I'm looking at
> having the Kenton MIDI installed (though I don't know how I feel
> about drilling into the beautiful front panel to install switches--
> we'll see).
>
> I also own an Arp 2600, the internals of which I had overhauled by
> an Arp specialist (Cirocco). When I go it, the Arp's enclosure was
> so water damaged and the hinges & corners so rusted that I had to
> have a new enclosure made for it. Fortunately I have a woodworking
> friend who replicated the original enclosure out of plywood and I
> tolexed it (using the old tolex as a pattern), and put on the
> corner/hinges/handle hardware, hand-setting every rivet. That was a
> huge, weeks-long project, but I learned a lot about tolex, rivets,
> hard-to-find case hardware, and people that shamelessly lie to you
> on eBay about what they're selling you. In the end, I have the most
> mint (if not original) cases for an Arp 2600 in existence. If only
> it could hold it's tuning as well as the CS-80�
>
> So, back to the CS-80: I'm somewhat concerned. With all of the
> reading I've done here and on the net about replacing parts, etc.,
> I feel like I'm sitting on a time bomb. Is my CS-80 going to just
> stop working one day? I understand that there are aging components,
> but I don't know what I need to do right now for a unit that seems
> to be functioning well. It seems that I should have the power
> supply refurbished (Circuit Solutions kit) based on what others
> have written, but what about the other stuff? Should I wait until
> something breaks before I have it fixed? Or is there potential for
> worse damage if I don't do something now? I want to do what's best,
> yet avoid overkill.
>
> I'm glad to be here. Thanks for letting me share.
>
> Doug
>
>
[Non-text portions of this message have been removed]