I think I have the same problem. I installed my F700BT a week ago. It worked fine last night and for the past week, but this morning....black video screen and backlighting changes to red. I do get the splash screen, but that's it. (I only drive 5 miles to work. ) After I started the car, the splash screen came on, but the screen went blank until my iPhone 3G connected (I get the notifier). Then the screen goes blank again and stays that way. The kicker is that my sources play just fine.
I tried resetting the unit multiple times, but nothing. I too would like to know what's causing