The Greek: Antenna problems are often just the result of the "toothed" nylon cord inside the antenna mast breaking. The mast is only a few bucks and can be replaced. I'll start a new thread for you rather than hijacking this one - look for it.

Here is your new thread. Can you hear the motor run when you turn radio on/off? If not, check to see if it is still plugged in at the antenna mounting in the back. If unplugged, plug it in and see if it runs when radio is turned on/off. If it does, simple mast replacement should do the trick.