Hi Alex,
You might be interested in my recent thread entitled;
"Need quality DVD-RAM recorder with ATSC tuner"
I telephoned Panasonic at 800-561-5505 and they were very helpful, albeit it took them a while to actually pick up the phone. I suggest that you unplug your DVD player for 24 hours and hope for the best. There may also be a way to do a "reset" by pushing two buttons at once. This should be somewhere in your owner's manual. Good luck!
(Now, I wish someone would respond to my thread. LOL!)