Still a mystery to me

[Steve McVoy]

They were rarely set up correctly, and they really weren't stable. If you went into a store that had several on display, they would all have different color rendition. Reliability was also a big issue - we don't notice that much as collectors because we typically only run a set for a few hours a month compared to 5-6 hours a day for viewers back then. Finally, there was significant difference in the quality of color programming, particularly local programming.