Turns on but has blank screen

A couple days ago, I plugged my Onyx in to the cigarette lighter plug. For whatever reason, the fuse in the plug going to the Onyx blew. I replaced the fuse and now it lites up but the screen is blank. Can't see anything but a lite blue background color. I contacted SiriusXM support, they advised me to re-activate the system but the radio needs to be on channel one to do this. Since I can't see anything on the screen to get it to channel one, anyone have any suggestions on how to reboot the system or any other advise short of needing a new radio? Any help would be appreciated. Thanks