Has anyone ever had the radi in their mini turn off every 20 minutes, or sometimes not turn on at all? Mine started doing that after I was fussing around behind the radio trying to wire up power for a sat radio, and I can't figure out why. Nothing seems to be loose, fuses seem to be fine.

 

Dealer just installed iPod adapter and now radio is behaving exactly as you describe.

Did you identify the problem?