Key issue, bushings?

[Palle]

Suddenly a tone got stuck on my model D. If I remember correctly, it kept on going simultaneously with tones played. With no idea what to do, I moved the Minimoog a bit, like shaking it sideways very little. The tone stopped, but the upper most C key popped up, about 1/4 inch.
I could, of coarse, open the Minimoog up myself, but it´s not in my home, and I won´t have access to it until next weekend. So, I´m asking you what you think might the problem. Replace bushings, is my first thought, but I can´t figure out how it caused the tone in the first place (the very sam C as the key).

[stiiiiiiive]

I was going to suggest the A440 tone generator got stuck somewhat... until you mention the fact the stuck tone was the last key C.
I don't know much about the D guts but it seems very strange to me that this tone sounded while other -normal- sounds were being emitted too...
Hopefully someone will chime in with better knowledge than mine

[Palle]

Thanks for answering. I'm guessing the bushing got stuck somehow. Owned it since 2001, so it's about time I take proper look in there anyway, perhaps exchange some of the worst springs as well.

[stiiiiiiive]

From what I know, a blocked bushing would stuck the matching note. How comes you could hear others pitches at the same time? Or did I misunderstand?

[Palle]

As far as I remember it, that C sounded constantly, even when other keys were played. Weird and impossible, I suppose, but that went on for just a short while.

[Palle]

Took a look at the keybed yesterday, and half of the mentioned C key bushing still stuck to its place. The rest was small bits and pieces. So, new bushings are ordered, but the duophonic behaviour mystery remains.

[stiiiiiiive]

Maybe you don't want these new bushings. Maybe you do want a duophonic Minimoog

[Palle]

I prefer the monophonic version, without a doubt.
New bushings, along with some contact springs, are on the way.