Mid Radio buttons don't work

[GMAN]

Hello
I'm new the site and need help.
I purchased a 2005 X5 last week which had a few problems.
First problem is the mid radio display buttons don't work. Display LEDs are perfect, radio has sound, CD works, volume control works, but .....
after the car starts it will allow me to push any button once and thats it. Nothing works again! If I push the scan button first; it will scan until I turn the car off and never find a station. If I push mode; the display will come up, but all the buttons are dead.
I was able to set the clock one morning when I had control for about 10 seconds. I have disconected all the plugs and sprayed and cleaned. Checked for water damage, etc.

Which part is bad?
Business CD
Mid Radio
Amp

Thank you, Greg

[GMAN]

I thought I shall be kind enough to help the next poor soul with the same problem by giving the repair
It was the mid radio display. Even though the LED display was perfect the fuction of the mother board was bad.