My last coach had troubles with the RV radio and was replaced early on under warranty. After another several years I had some more problems with it and Magnadyne was good enough to send me one free even though it was out of warranty.
We've not had any problems with the RV radio in our new coach, but don't care much for it. I think when it goes I'll do some modifications and put in a quality radio. The same goes for the overpriced audio system - about the only reason I wish I had waited for an '06!