NTSC games will often cause the picture to roll on older TV's. I have two TV's that did it.
They both had internal vhold things and i had someone fix em up for me.
Have u tried other NTSC games?
if you have and they don't roll, then i stand corrected
Here's a test u can try.
Download and Burn the Import Player disc, this lets u set the video mode.
boot the disc and choose pal, then start the game that rolls. If it no-longer rolls then it is the Vertical hold.