I remember doing a mod back in the late 80s/early 90s involving
replacing the oscillator chips in order to stablize tuning......is the
IG00153 VCO an earlier version to the ones I put in... or was there a
later modification after this time-period .....I remember waiting two
months for the chips from
japan and paid about $350total . for the 16 of them ....To use these
chips, there was a mod needed to the M board as well with a diode being
added or removed (its been a long time)....If these chips are available
I would also be interested and would need to have instructions on how
to back engineer the mod with the diode......
kent_spong wrote:
> Hi all,
>
> As from tommorrow KSR will be providing a new service to all CS80
> owners. In the form of a board repair by post instead of humping
> their CS80 to KSR for small repairs and upgrades. In addition to
> this I have decided to release the Dynamic Mono/Poly mod as a easy
> to fit kit with everything needed to fit and play. All you have to
> do is solder in the wires.
>
> I have been thinking about taking the midi aspect of the 80 to a
> new level and producing a kit form of this too. The one thing that
> seems to be needed is more control of the front panel sliders and
> switches and an ability to store programs. Since I restore all
> vintage synths as well as 80's, time seems to be the hardest thing
> to get to work this all out, but I have made a start with the basic
> outline.
>
> Also some time towards the end of the year I will be refurbishing
> glide strips with new gold plated spring and crushed velvet cover.
> My 80 is now sporting a red velvet glide strip. :)
>
> I'm still having talks with Yamaha japan via Yamaha UK to get them
> to run off a batch of IG00153 VCO's for me. So far I have got
> a "well we might be able to do that" from them. So I am starting a
> petition to get them to go for it as I feel they think there is not
> enough people out there who want to buy brand new, dead stable, late
> version CS80 VCO's. Yes who indeed?
>
> Till next time
>
> Kent
>
>
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