From FB group Vintage Transistor Radios
Jim LaFrance:
I’ve never found a Zenith that was not worthy of repair. Good solid builds!
me:
I agree; they’re solid, well designed radios. Now that I have a bunch, my supply of old germanium transistors that I had accumulated seems inadequate, so I may have to start experimenting with silicon. Rebiasing doesn’t seem to be a problem, but other considerations, such as higher gain and neutralization become important.
One thing I did see was the old carbon composition resistors go out of tolerance. I found one that was labeled 1k, 10%, and it measured 1200 ohms. Close enough to make the circuit seem to work, but not work very good. So keep that in mind. 👍
