Lyndon hit it bimby. I have found that 90% of the time that my friends complained about thier PS2's not reading or (selective reading) as I call it, its the lense that has to be cleaned. ITs an easy, 10 minute job and 9 out of 10 times, it will read like new. Just be careful when cleaning using a q-tip. Sometimes you leave fuzz from it on the lense without knowing. (ive done it)If you have a magnifying glass, use it to be sure. Personally, I use a corner of a folded paper towel but both will work. While you are in there, make sure to blow out all the dust from the system......fan especially and front grill. Bad airflow is the leading cause of system failing and overheating issues.

Nec