Hello everyone!
I have been all day trying to fix the jumping values of my OT mk1, looking on the internet for everything it can find, and trying several things.
I think I have the solution, at least for me.
@Munro, pull off knob cap off and apply one drop in the gap may improve a Little bit but it does not solve the problema.
Akai s3000 encoders are different, and here the problem is not the dirt (although I imagine that in some case it could be).
LyingDalai is right, the encoders that are used the most are the ones that start to malfunction.
In this video, when he disassembles the top of the encoder, you can see a small black ring.
That ring at the bottom has 3 contacts. When you push the encoder thousands of times with force, these contacts bend inward, and stop making good contact.
If you disassemble the top of the encoder as seen in the video, carefully remove the black ring, and push the 3 contacts up a little so that they put more pressure on the base of the encoder, the problem is solved. Take advantage to also clean the contact and be careful with excess oil.
To reassemble the upper part of the encoder, it is enough to fit it and tighten the 4 metal tabs well to hold it firmly.
I had 3 encoders that jumped continuously, and doing this works like the first day. And without having to replace them with new ones.
I hope it helps you!