Hi. First forum posting, so wish me luck. A couple of days ago the radio display showed a random selection of angled lines, but powered on and worked ok. Next time we used the car the radio came on with the ignition, but did not respond to any of the buttons, volume, anything. So it is now fixed on one station at a set volume that we can not change and we can not switch it off. Okay until it loses the radio signal, at which point we are forced to listen to the crackling noise. Help please. It's a 2006 Crossfire with the standard radio (as far as I'm aware).