dvd player making a buzzing noise

yesterday I was playing dvd's in my macbook no problem. today, the dvd player is rejecting all dvds out after it starts to read it, then it makes a strange low humming noise( like it is stuck in 1 spot or something), then it rejects the dvd. I have tried 3 different dvd's and it has done it to all 3. The dvd player did do this once before about 3 weeks ago, but it seemed to have fixed itself because I have been watching dvd's on it all week this past week....should I take it in to get fixed and pay a ridiculous amount for something that I could have done myself?