Have you cycled through all the HDMI inputs? Make sure you do this with the DVD player playing a disc, so it is outputting a constant signal.
Yes - there are only 2 on the TV - one is hooked up to the cable, the other is open - but doesn't pick up the DVD player - I switched the cords so the HDMI for the cable is in the 2 position to see if the 1 position works with the DVD ... it does not