Thinking about this some more and the way it's behaving, it sounds like the Kenton board may be the problem.
It's hard to imagine a non-Kenton unit displaying those mannerisms?and all of the items you called out are related to Kenton functions.
Maybe try pulling and re-seating all the Kenton board connectors.
On Sun, Apr 13, 2025 at 12:59?PM Scott Rodriguez via <synthrodriguez=
gmail.com@groups.io> wrote:
Those are some weird issues. As always, step 1 is to verify power. Use a meter to check for voltage and ripple or better yet use a scope.
+15, -15,?+10.6, -6.5,?+8.5 should all be pretty close. If so, move on. If not, you found where to start! :)
Hi CS80 gurus, owners and fans.?
I have a CS80 with Kenton midi that I have owned since 2012 and recently put into storage for three years. The synth was working fine prior to storing but now there are a range of strange, possibly interconnected, issues. I’ll try and describe yhem
as best I can.?
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On powering up a single octave plays whatever keys you press on the keyboard.? For instance no matter what C key that I press it’s all the same octave etc.?
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The LFO doesn’t seem to work at all and the aftertouch brightness high and low paddle causes a pitch change.
maybe most telling when a select some preset buttons a random third button will light.?
Weirdly, at one stage I held the ribbon at a particular spot and was able to play the synth more or less normally.?
There may be more weirdness that I’m yet to discover but these are the main symptoms. I’m reasonably techy and have a scope but it would be great to get some ideas of where to start.
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