I got some dvds for christmas and they play fine, but the dvd player makes a kind of hissing sound when they're playing. It's not loud enough to interfere with watching though. None of my other dvds make it sound like that.
I tried taking them back and getting a replacement, but the new one makes the same sound.
Any idea what is causing this? I can still watch them just fine, but I don't want it to somehow damage the dvd player.