1st Off dont worry about the heading, i didnt win that PS3 but ......Ok i bought an As-Is ps3 80GiG off eBay and its works , it just doesn't read disc , does anyone know how to fix it permanently so i could have a PS3 to play MGS4 on ?

replace the laser and laser assembly and it should work fine ran into this problem on many ps3

Replace it ? .... ok where do i get a laser and laser assembly from to replace it and your sure its gonna work

i have ran into the same problem on 25 ps3 it fixed them all and you can get them on ebay or http://store.richspsxparts.com/pl3paac.html

You could see if sony would replace it. I had bought one awhile back and rang up sony and they sent me a box, then a new console after I sent it back

Thank You . feel like i switched to Geico .... saved a bunch of money on a PS3 haha

So which one would i pick to put in to the system , or it just one laser 4 all PS3 models ???

and

what if the warritay sticker if off , how much would sony charge to fix it or just send it and they wont notice ???

Call Sony and try to see if they will fix it.
The north American phone number is:
1-800-345-SONY
If they say no then buy the laser.
Just be honest with them, dont mention where you bought it unless they ask. Sony will not fix it if the sticker is altered.

The worst they will do is say "No we will not fix it under warranty and we will not fix it if you were to pay us (if the warranty sticker is messed up)"
They may say "We will not fix it for free but for $xxx.xx we can repair it or send you a refurbished unit."
They may say "Send it in and we will take care of it under warranty."

Just call them they aren't the devil.