There are a lot of video circuits in a TV. How well they are set up (alignment)
in the factory will make a great difference in the final picture. (Maybe less than in the "old" days.) Bandwidth and flatness of responce and phase relationships in the video signal path are very important.
The user also contributes to making the picture better or worse.
I don't know how it is in the USA anymore, but in the 40s-70s NTSC
also meant Never The Same Color.
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