I agree with those who say the screen is unnecessary and adds to expense and impairs sound quality.
I have universal disc players in my systems. In my main system, if I turn off the video circuitry of the disc player, I hear more deep bass if the material I'm playing has it. Since all my universal disc players have this option, I think that video circuitry can impair SQ, and I suspect that is true for displays (on some of those players, turning off the video also turns off the display).