Here is the Plasmatron 3000 Flat Screen TV which was an unlockable item from what I think is a patch? I'm not sure - however, here it is! It's basegame compatible and comes in one colour (black) because who the hell has a white flat screen, EAxis? Is it 2007? TS4's colour options are weird, so you just get black. This may also be because the other two refused to work (despite TSDesignMode being enabled and everything looking kosher under the hood). Who even knows anymore. I'm tired. Have a TV.
Here is a size comparison to Maxis' TVs. It's about as big as the AL big-screen TV, but that wouldn't fit in the frame.