Video Game Console Repair Questions? Ask a Technician ASAP
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If it is the read-only optical drive (disc drive) that has a problem, you might want to run a CD cleaning kit in it, two or three times, to see if that allows video and music to be read off a disc and produced during loading.
But after that, I would say, take it or send it to Sony. Esp. if it's within its warranty period still - they should fix it for free or for a greatly reduced charge if that is the case. And opening the case would void the warranty.