I recently got a sega saturn and it doesn't read any saturn games.

It turns on everything seems to be okay but then i hear the motor making this weird sound and the cd won't spin most of the time. Other times it'll spin but still won't read it. I think the motor might be screwed up but what i was really wondering was is there a way to replace the motor in these things or am i basically screwed? I'm thinking the motor is a common part that could be replaced since i have an electronics shop near me and they carry these type of motors. Any help is appreciated. Thanks.