DVD player won't read dvd
I recently tried to use my dvd player to play a burned dvd. The dvd player showed video for the first copy but no audio. I burned another dvd and tried again. This time dvd player states it cannot read the disc. I have since tried to play retail dvd's that previously worked in the machine but it keeps stating it cannot read the disc, even though it previously read them. Could my attempts at having the dvd player read a burned dvd now permanently damaged the dvd player? Help. I have no idea what to do. I adjusted some of the settings to see if it would help to no avail. The dvd player is a 2007 panasonic so I am not sure how much can be done for it.