Remembering Television

So I have this old television set, and before you think I'm being unsmug, let me reassure you that I only use it to watch British news shows. Anyway, I have this TV, and there's this staticky multicolored line that lazily rolls its way up the screen until it reaches the top, then wraps around to the bottom of the screen and starts over again. It doesn't matter how I turn and fuss over the antennae, or even if I convince some overly helpful friend to stand there holding the metal rods; the line rolls on.

That line, that funny unmalicious irritating little line. I started to wonder what it was. Some glitch in the casters of the tube or something, most likely? ( I took photographs to find out. )

Perhaps I'll anoint myself and dive in there myself sometime.