I had several new cable boxes installed yesterday. 2 of those boxes were a good distance from the TVs they control— for example, the cable box is in a closet, while the TVs are hung on a wall across the room, giving a clean, “no wires” look. But these TVs now do not display in color. They’re streaky, and only show black and white. The technician who installed them didn’t have a good explanation. Does anyone on this forum have ideas as to what’s going on and how to effect a repair?