1.) i'm 95% sure it does(most tv's have them), but it is through the service menu which i dont know how to get into. a simple google search can probably get to it.
2.) leave the contrast and/or brightness pretty low (just to the point where you're getting a good picture...but its not super bright) for the first +-100 hours and you'll be all set. most likely, you wont even have a problem with it.
ps: burnins on most plasmas are VERY fixable.
I just bought a Pio 4270...Very excited!
I just have 2 questions, in which I hope someone call help me with:
1) does the Pio 4270 have an internal clock display ( like on some other plasma menu feature, in order to determine how long sets been on for "burn-in" period?!?
2) what settings, and for how long, should a new set be on for "burn-in" period?!?