i had this problem on my v1 ps2 same stuff as you the disk only spins 1/10 of a spin so i gave it to my friend and he looked at it and told me the lens was bad
go here for parts
http://www.videogamerepair.com/
they have new lenses and ribon cables
they sell ribon cables for less then the one above
http://www.gamegizmo.com/
i hope you can get it working again