Was the movie encoded with divx or xvid? If it wasn't regular DVD movie encoded with MPEG-2 codec, some DVD players are unable to replay the movie even if they support divx or xvid codecs.
You didn't mention if you brought the same DVD disc with you to the retailer,
so it's not easy to figure out whether it's the DVD or your TV that's causing
the problem.
☞ Plz 님께서 남기신 글