Doc's TV set in "Back to the Future"

[Jon A.]

Originally Posted by heykey4

I know that the prop guys in the first BTTF just put modern TV inside the vintage cabinet. They mention it if you watch the movie with commentary on.

So destroying old TVs in that way is nothing new.

In a deleted scene, Marty asks Doc Brown for a 75-300 ohm matching transformer to connect the camera to that TV. Doc doesn't know what Marty is talking about, then Marty realizes they hadn't been invented yet.