Obstinate Becker Radio

[ejsharp]

The Becker Radio on my 1987 300E is behaving oddly. Probably because I cleaned the dash with a spray cleaner. The on/off swich is stuck at "On" and the radio will not turn off except when I turn off the ignition key.

But, with the ignition off, the speakers occationally make noises and when the speakers make the sounds with the ignition off the automatic antenna sometimes goes up by itself and then it will unpredicatably go down.

I washed the dash about a month ago and I figure it should have dried out by now. (if dampness is causing the problem) Any ideas what is causing the odd behavior and what I can do about it other than pulling the radio and putting it in the clothes dryer?

Smiles.