Zenith C845 - FM works, no AM

[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