I have already had to replace my first one. recently my PS3 has been getting hot, tonight my PS3 froze I think because it was too hot. What can I do fix this problem so I don't have to replace another one? I have no idea how to properly take apart and put back together a PS3, I think it has something to do with the sealant that helps keep the system from overheating.

I was hoping that GTA V will be the last game I buy, But I don't want my PS3 broken by the time GTA V comes out in March of next year. It costs about one hundred dollars to get a PS3 replaced or repaired, And right now i cannot afford it. Any Info would be appreciated.