[MrFixr55]

A lot of companies used wire wrap. I can't remember but RCA may have also used it. I don't know if the issue was the wrapping or poor "take" of the solder joints between the pins and PC board. Poor soldering was a big problem in TVs, especially between tabs of the metal chassis and PC Boards. Even the "hand-wired" Zeniths had this issue. The ones from the 70s may have been hand wired but the wires were pushed into cone like terminals that were on the surface. If I read correctly, the thing was then wave soldered in a manner similar to a PC Board. I went nuts with one with a nasty video ghost till, while poking around, i saw a very small arc between a pin that was supposed to be soldered to the chassis and the chassis. Had the set for many years after that and gave it away.