My Roomba wasn't working either. Opened up the Roomba and noticed corrosion on the motherboard over the Clean button and the control panel only. It wasn't moving but everything would light up. The battery was charging fine it just wouldn't react to any commands via the button on top of the motherboard. However, I was able to beam commands to it through an IR blaster. When I send commands to it that way it works fine. Its a bummer that I cant just press the Clean button but at least it works. It still works perfectly fine even though the buttons no longer work. Maybe your problem is similar and it only got a bit wet but it could still function if you control it via a remote control instead of its control panel. Just an idea.