Got everything working, apart from the CD. Radio sounds surprisingly good!
I bought one CN+ and it has a problem similar whith yours.
I have a CN+ for alfa that i buy on ebay.uk, but the radio and some other menus are disabled, so there is no sound, or acess to de radio menus.
I have done the test in main menu, and it does not connect to the radio board.
I tried a second radio/amp board , but the result is the same.
I have already, instaled the 12+ v in pin 4.
Before this CN+, i had a CN and it worked fine, even the canbus, that in this CN+ also doesn't work. (haven't found yet the can bus cable, but whith CN it worked just fine.)
Any Idea??? Main board whith some problem, or any connection missing?
Thanks in advance for any comment to this.
Paulo from Portugal.