Quote:
Originally Posted by jr_tech
I found a schematic here:
http://techpreservation.dyndns.org/s...ics/Zenith.htm
Looks like the 12AT7 serves as LO for both AM & FM... Try another one perhaps. How did the pin get broken off... did the radio fall or something? Was the antenna also damaged somehow? Perhaps a more complete description of the events surrounding the failure would be helpful here.
jr |
If you look at the schematic, you'll see that the AM oscillator circuit is rather involved.
Per previous entries, stating a sub for a 6BJ6 vs a 12BA6 sub. They're both remote cutoff penthodes and can be tried, to see if there's an improvement.
It's strange, as I have several of these same receivers and they're the most reliable and best performing sets of their kind.
The only problem, I ever had with these sets is bad tubes, lytics and band selector switches that needed cleaning. Also dial cord restringing.
