I used to have an NTSC power player. Now I noticed that the PAL Power Player runs slower than the NTSC one. Maybe the crystal on this Power Player is slower and swapping it out with a faster one and the same crystal as the NTSC one will make it work?
EDIT: Looking closer to other SJ3 board pics I could find on the net, the crystal on the NTSC boards is bigger than mine. I can't get the value though. >_<