Owning a TV could fall into the realm of this teaching:
Mark 9:47-48 (NKJV) 47 And if your eye causes you to sin, pluck it out. It is better for you to enter the kingdom of God with one eye, rather than having two eyes, to be cast into hell fire— 48 where
Their worm does not die
And the fire is not quenched.’
If something makes you fall continually, you better go radical about it. Having a TV set in the living room may cause you to turn it on when you are in the sofa taking a break after work and wanting to do, read, or watch something lightheaded. The problem is that you may find some neutral content (hard to fine but maybe you are lucky) but you could end up with ads of homosexuals kissing each other and your kids watching it, or people close to naked, or free violence as something cool.
There is a difference between seeing it in public and just turning your head and disapprove it in your heart and walk away to our own business, than putting in front of your eyes as part of your entertainment.