On my Keylab 88 all the white keys of one octave (plus the B one octave lower) rattle a bit when pressed. It's not loud but annoying unless I'm using headphones. Once I press all the keys quite hard the rattling noise disappears only to come back after a few minutes.
I've been told to send it in for a repair which may take up to 2 months. Since this is something that can probably be fixed by tightening one or two screws somewhere and I'd hate to be without a controller for so long, does anyone have an idea if I would be able to fix that myself? Would it be okay to open the bottom just to have a look or would that already void the warranty?