the whole display fades out in under a minute (kind of like a screen saver) and if you hit the power button, it resets the clock and alarm to 12:00 but maintains the programmed stations (channels). However, if you have the alarms set and switched on, the memory stays the the screen still goes out.
Comment by strlfan86, posted on Jul 18, 2008
I guess this might help: Insignia NS-S4000 with iPod dock