Trinitron Horizontal Flicker

[old_tv_nut]

Originally Posted by Electronic M

Voltage regulating power line isolation transformer.

Yes, some kind of line isolation. Line conducted interference can come from many things, for example, a motor in your furnace.

This stuff could also be radiated, which would be seen in analog reception, but won't be visible with digital sources. One place I lived, I got streaks in analog TV reception whenever the neighbor's furnace was running.