Maybe a bit of a silly question about the iBP MEK Keyboard...

So the red backlit ibp keyboard is really nice but at night I like to turn it off cuz no one wants a big red light on when they're trying to sleep. Before when I turned the lights off on the keyboard they would all shutoff. But now all except one turns off and its the [Print Screen/ Sys Rq] key. It wasn't too bothersome at first but now its starting to get a bit annoying. I didn't fiddle with any macros or anything like that, I may have just hit some set of keys that keep it on permanently now. It used to turn off along with the rest of the keys but not anymore. Now it just stays lit while the rest of the keys are off. I just wanna now how can I make it like it was before so they all turn off altogether. Any help appreciated.