When not charging, the timeout kicks in and the screen goes blank.
When charging....it seems to either dim on the main screen forever. I've played around with bedside mode, off/on and other settings, and can't seem to find the right combo so so that when I am charging the BB, it will just timeout and the screen will go blank.
I have a BB tour. Took a 2 year hiatus from BB and now I am back
Been using it even before RIM was making phones with the BB