Before you buy anything, make sure it's the power cord and not the unit itself. I own the same item and it stopped working around the same time. The secondary unit (without the DVD player) gets power fine. But when you plug the power directly in the unit which has the DVD player, does the power light come on? If it does, then it mgiht be the cord. Otherwise, there's something likely wrong with the unit.
Mking 1502, November 2007