I bought a used ps2 (v.4?) about 2 months ago and every now and then, I get a "no data" error message. I usually try rebooting the system and reload the disc. That helps until one day the "no data" error message and some cranking noise just persisted. so, I opened it up and cleaned the lens and tried every possible turn with the white disc that's suppose to change the lens' angle and still doesn't help. So, I'm out of ideas on how to tweak my ps 2 unit. If anyone has suggestion, I'm all ear ?.