Disk Read Error

Everytime I insert a disk into my PS2 i get a disk read error. My PS2 is old, we got it when it first came out. I've cleaned my disk and made sure theres nothing on them. This problem use to happen to new games and play only my old games. Now it says it everytime for every game. Can someone help me? Or has my PS2 finally died and i should get a new one?