Today I reactivated my Maschine 2 after months of inactivity. on the screen of the 2 displays Maschine and the logo appear on the left one, Production and Performance System appear on the right one, using the shift + channel midi button. I wanted to switch to USB activation, but it doesn't work. Coincidentally, after several attempts, another phrase appeared on the right display and by activating the procedure I managed to get it started. this for a few minutes, then everything became unusable again. Is it possible that oxide has formed on the contacts?