There's nothing 'on television' right now. [=there are no programs that I would like to watch now]
I recognize your face. Are you 'on television'? [=do you appear in a television program?]
What is 'on the television' [='on TV', ('chiefly Brit') 'on (the) telly'] tonight?
(..) And what about her voice? How do we explain that? I think the first time she was making that voice it was in front of television cameras. And she couldn't do it with water in her mouth until you looked away. So she could have spit it out, taken another sip before you turned back. (..)2016 The Conjuring 2
(..) Are you okay? I'm okay. Mrs. Hodgson. Yes? My name's Kent Allen. We're with the television news program Wide Angle. I was hoping to have a word with you about the disturbance at your home last week. How'd you find out about that? The police constables filed (..)2016 The Conjuring 2