They worked, today, more or less, but in the near future they will damage your synth. And if they do, its maybe too late. It is a good idea if you let your synths be checked by a tech like me, to verify the components inside. Your synth will be thankful.
While the synth was already open I could easily access all the controls. I cleaned all potentiometers, switches, rotary.
I also cleaned the keyboard.
Before...