I did a search for this topic and didn't find anything. If this is a repeat I apologize in advance.

Anyways my Alpine CDA-9856 got something spilled on it (I think) and now the buttons are sticky. I can still use them but they are hard to push in. I have tried to wipe it down with some water when the head unit is unplugged but that doesn't seem to help. Does anyone have some suggestions?

Use a q-tip and some rubbing alcohol. Again, don't have the thing powered up while you do it.