Hello Roku,
I have most recently been experiencing the same! I worked in the broadcast industry for 30 years of my life. Even so, I pretty much only watched television as a monitor. I worked hard for 28 years, made millions and had the best monitors money could buy.
Now, all these years later, after the abduction of my daughter, I find myself poverty-stricken. I guess I am fortunate to have any television. With that said, I have been happy with the Philips-Roku television. Happy until I too found myself wondering why I have no audio on a television that is only 3 years old. Growing up as a child there was always a television in the house that worked. Kind of surprising all these years later, this facet of technology has declined.
Thanks for your timely and professional response!
Donald