MIDI keyboard needs another life

Hello... 1. I just bought an Arduino Uno, can I use it to check the motherboard of my midi keyboard? 2. Otherwise, I would like to use rotarys, sliders, buttons, pads, keys...to make a controller for Ableton, ... The motherboard has issues and they don't have that model 's part anymore (Axiom49, 2007!), the other parts, circuits, are independant from each other as they connect to motherboard with their own boards, and in good state. I am newbie in electronics, I need help to figure out some reusage project. Thanks