laser problems

[koalabear1]

Hi all,

I have a PS2 with a NEO4 chip installed. Recently my PS2 stopped reading anything from original dvd's to copied ps2 games. It sounded like it wasn't spinning the discs & I thought my laser was burnt out. I purchased a new laser & installed it but it still doesn't seem to work. The disc doesn't spin & the laser doesn't seem to turn on.(I think a blue light should illuminate the laser). Power seems to be getting through as the spindle turns momentarily then stops & the laser moves up & down a few times then stops as well. Can anyone help?? Is there another problem it could be??? Does it have anything to do with the power or maybe some wires with my chip???