I have about 50 old fat ps2's and about 100 lasers.I use to fix them but, stopped when the new ps2 came out.I use to mod them all the time and then ebay and sony cut that out.I had a repair service and did alot of laser replacement and used dms4 and 3 chips on the mods.There all parts or disk read errors.Had lots of the xbox systems but, sold that lot.