
Issues:
1. One of the keys is not responding as fast as the rest of the keys.
2. I can hear low-noise on the output and found a blog, about this issue mentioning that I can replace G2VN-237PL with NTE R40-11D2-5/6 -> Souce Link
3. I get scratch noise, when I move the chorus fader.
4. The Fader cap is missing on the chorus fader.
Extra things, which I want to do, when I open the device anyway:
1. Battery replacement
2. Firmware OS back (as I cannot see it anywhere else online)
3. Replace LCD backlight
4. Switch cleaning.
I will take it step-by-step: