[andex]

First we need to know what kind of chip is install in your ps2 and the way u say it it sound like a messiah or the magic 2 chip

So I dont thinks is anythings wrong with your ps2 laser or your chip or the media.

I have the same problem like u but did u try to play original ps2 game,psx back up and original psx?

If it play everything except your ps2 back up than more than likely is the loose wires and I thinks is the point A on the back of your ps2 motherboard.

But if u can't play anything at all than it could be the chip.So try it out and lets us know.