If you ever pour liquer or wine onto a keyboard, then please open the keyboard fast and clean it thoroughly. Delays up to some days likely will not create big problems but waiting for three months certainly will. The liquid will etch itself through the copper and lead, thus damaging the tracks on the board. Here are some horror pics illustrating the situation:
An extra remark – please orient these rubber bands properly. Should you rotate it 180 degrees, you will loose the the velocity sensitivity for the particular segment of the keyboard. Rubber bands are to be cleaned, too.
The liquid has had some consequences on the mechanical construction, too:
This is the overall view of an Oxygen-61 taken apart:
It is advisable to take some photos before taking apart the keyboard, thus you will know how to put the pieces together again.
It also is useful to take high resolution pictures of the PCBs and IC’s on these: