LCD TV (DVD) doesn't work

40" Westinghouse LCD with built in DVD: The player wouldn't eject the DVD disc. I finally got it to eject the disc by unplugging the TV power cord for a few minuted and then plugging it in. Now the player won't play any DVD disc. After putting in a disc the DVD player starts to run, then stops, then says no disc and ejects the disc. I've tried several discs with the same error.