I think my PS2 may have a problem with reading discs?

[Skill]

As you stated in your first post, you should open up the Playstation 2 and clean out any dust and unwanted particles. Also, make sure that once you have opened the Playstation 2 that all the wires are connected properly. This has helped me out in the past when my Playstation 2 used to stop reading disks. For some reason my Playstation 2 would stop reading disks that were blue on the opposite side. Strange, I know, but it was easily solved when I opened it up and gave it a good clean.

I hope this helps you out