Vulnerability DVD players

Basically the Medion P14090 is a beautiful TV - the picture quality is good, the operation simple and intuitive, and the structure was fixed and easily. With 4 screws, only the foot to mount.
The sound quality has (despite some critical reviews) surprised me positively. All in all, I would like to keep him (and 5 star given), if not for the DVD player. The first and the replacement had the same problem: The player has drawn no DVD, despite action by instructions ("Input" to "DVD" position). Purely mechanical, nothing happened when offering the DVD. I tried several DVDs.
Maybe I was just unlucky and got caught 2 units a defective series ?!
Therefore, unfortunately only 1 star - I think it should have all specified functions be properly.