I recenly purchased my car and basically got it as is, the problem is that my car radio will not allow me to turn to a different station, the cd/cassette player do not work at all, the display is blank and the volume wont turn up. My question is would this be a major problem that cost a lot of money to fix or could I simply need to buy a new radio???? I kno this is a lot but im desperate for expert advice.... Thnx n advance