input selector has started going Godzilla on me...

Just out of the blue it will start switching from cd to tuner to tape to whatever, over and over and over again. Even my remote does not stop it. I have to send it in to have it looked at, but I wonder what it means now. There could be a lot of different reasons, but I wonder if anyone else has had this problem and what some of the causes might be. Could it be suffering from a sort of electrical alzheimers condition? Kicking it and throwing it out my second floor window didnt seem to help.