As in I randomly knock some doors, ask to come in, find their TV, then their remote, then change settings to my liking and leave?
Not all heroes wear capes.
I mean sure, if that's your style. Personally I carry a universal remote for when I'm doing this.
I only do it for TVs that are accessible to my universal remote that I can see from outside the windows, that way I don't need to disturb the families
"Excuse me sir, Do you have moment to talk about your TV settings"
I once fixed the remote at a brother-in-law's place. Came back a week later and changed channels using the remote. He shouted "You mean it's been working the whole week and I've been on my knees changing channels?!"