Used the car the day before and all fine. Came to start this morning and no start up screen on the Colombus unit 5510. Everything else seems fine except for no radio. Strange? Off to check the fuses but any ideas would be much appreciated.

There might be different reasons. Pls check if th ebuttons backlight works when you turn the lights on.

Success. Checked the fuses and no issue with those, but removing them must have been a Ctrl Alt Delete sort of action as its now working again. Thank goodness for that. Hurrah!!