We live in a '61 Eichler in Terra Linda/San Rafael with the original circuit panel. One of our 30amp circuit breakers is on the blink and we're advised by some Eichler owners to just go ahead and spend the ~$1700-$1800 to have the entire panel replaced, complete with permit. We're also told that these Zinsco circuit breakers are not being manufactured anymore. But my uncle has one and is willing to replace it for us(he's a retired electrician.) Can someone weigh in on the pros and cons of replacing the entire panel vs. just switching an individual circuit breaker?