make sure you swap serial #'s if you're gonna do that, or you're in trouble because that's the first thing they check..
i did it when i bought my first psp second hand... it turned out to have TONS of stuck pixels... so i 'traded up'... that one ended up having 3 stuck pixels... i sold it and gave up for a while. then bought one a little while ago, ended up having 1 stuck pixel.... sold it and bought my white psp, which has a very tiny, miniscule, non-noticeable stuck sub-pixel....
