I have used it in the car and it has performed flawlessly, buyt today whilst it performed well , I couldn't see the charts, just a black screen.
It picked up a gps signal and the vitual radar appeared at the bottom of the screen and it came up with 'redrawing map' but there were no maps just blackness, I then checked the instrument view and that was there and working. I then dragged my finger accross the screen and the chart appeared, it redrew, but then when I moved my fingure, it went black again. I booted up my second device and it was exactly the same. I then booted up my pda(standby, standy device) and all was well.

The only thing different between them all is, that I didn't sync the PDA this morning before going flying.

Any ideas?

Thanks