Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
Press f2 repeatedly.

also note that the macbook screens have a "warm-up" time.
 
such is the benefit of LED screens.

I'm hoping that i will be able to retrofit mine when needed...or i'll just buy a new laptop.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.