another addition

Well Joe, a lot of credit still goes to you for saving that set and passing it on to someone else who'll restore it.

Those sets used modular components that were intendend to be plug in-out for replacement. They were made in Japan. I don't think the 71-72's were as much of a problem, but I remember by 73 there were some real quality issues with them. I remember my other grandparents had a 73 and it had a lot of trouble. My grandfather worked on it several times, usually for free because he felt bad about it. He always blamed the "boards from Japan."

BTW: I just found out that Zenith tried to buy Quasar from Motorola. They couldn't come to terms, and Zenith later sued Moto to try to stop the sale to Matsushita. I just ordered a book that details it and I'll read more when it gets here.