Make sure U plugin the adapter to walloutlet and the DC IN jack on the DVD player.
1)If there is a memory card or a thumbdrive ; take them out and check.
2)Check for the Switch (AV IN/OUT) on the DVD player (Probably on the back or on the sides).It should be in AVOUT.IF it is already in AVOUT Slide it to AVIN and back to AVOUT.
Ricky
February 2010