Was happily listening to my iPod when, suddenly, no sound. Looked at my screen and saw it had returned to the start up (i.e., Pioneer logo). Pressed "menu" , "map" and about everything else I could think of. It would occasionally go black for a few seconds before returning to the "Pioneer" screen. This morning, I was actually able to get the radio to work for a few minutes but, then, it was back to the logo screen, with no sound, no map function, nothing. I tried a reset, but that didn't help. Now I'm looking to my dear friends on this forum for help & advice. Thank you!