Hi Ozan,
I was able to remove the time base knob and there were two screws hidden by the moving plastic part mounted on springs: you need to gently push and then you can access the two screws. It took me time to figure out where the A-B lever was but it right under the panel and I think it was the guilty part so I cleaned carefully and it seems operational now. I have partly brought everything back now and will continue tomorrow but I spotted another bad contact, apparently on one of the three pot meters accessible by the shafts: the one associated with CHAN 1 seems glitchy so I will clean the three of them tomorrow.
Regarding the knobs I crushed, I asked for a 3D printing of this one () and the guy charges 15 € for three parts in either color : )
Cheers,
Christophe
