Radio or Amp problem no sound????

[jwj]

Hello all newbie Boxster owner with a problem. Here it goes have a cdr 210 which turns on shows radio stations and cd tracks but no sound to the speakers??? Checked fuses in panel and behind radio all is fine, amp is getting power I am at a loss. The only other thing I did notice is the display will not show the volume going up or down could it be broke volume button? Any help would go a long way before I have to go with aftermarket deck. Thanks