i have a scph-70012 slim model. Some Dvd's usually older ones but some not, don't play. Closer inspection led me to the conclusion that the dvd doesn't even spin. I don't know much about the initiating process but when the red laser kicks up and starts the gears then just stops, and there is this ticking sound like something is stuck. But SOME dvd's work and all the games work too. Is it the size of the disc? or maybe it doesn't recognize the disc at readable so doesn't bother to spin it? i don't get it, what are the working dvd's doing that the not working ones aren't? It didn't always have this problem, but i don't know enough to come to a conclusion or fix it. thx for the help.