Any ideas?

The Hubby bought me a LG brand DVD-recorder/VCR combo for my birthday in July. In the last month, the stupid DVD player has just decided to not read DVDs. Not recordable DVDs, but ones like Cars, Winnie the Pooh, i.e bought ones. They are in good shape, not scratched. And if I repeatedly put them in over and over, the player will eventually read them. But what's the deal? I have googled this and haven't had a lot of luck with finding any info... any of you techy friends out there have any ideas?

Oh, and I think the Hubby shredded the reciept, so there goes returning it to Best Buy..... *sigh*