Does it give you disc read errors in the browser when you try to boot a DVD-based game? If so, try following this guide. I did that with my SCPH-30001 and it helped it out quite a bit. There's also another method you could try that involves turning a white wheel or something and it raises the laser, making it easier for it to read the disc.
Edit: Fixed the link. I forgot that GameFAQs doesn't allow direct linking to the FAQs
. It's the second Disc Read Error FAQ on the page.
Edit: Fixed the link. I forgot that GameFAQs doesn't allow direct linking to the FAQs