http://users.edpnet.be/papa/synthimods/
Expand and preserve your beloved Synthi
“Many Synthi users dare not make mods because they’re afraid to depreciate their valuable instrument.
Is understandable, but is a pity because the mods wonderfully expand the Synthi and open doors to fantastic new sonic worlds. Here’s an idea I think is worth to be shared. I’m surprised no one else had it before.I did a few mods on my Synthis A MKI and AKS using push-pull pots instead of switches to avoid drilling holes in the panel. LEDs in the spare anti-rotation holes left by the original pots (push-pull ones are smaller) show that the mod is active when the knob is pulled. This makes the mods fully reversible and preserves the Synthi’s original appearance.”