1959 zenith has no horz. hold?

[dieseljeep]

Originally Posted by radiotron

ok heres what i found.....
theres something called an AFC DIODE on the scamatic.
is that it?
if so then its soldered underneath the chaissis
white with a tan top.

That's it! I looked at the Sams. It's under the chassis in front of the 6GH8 socket. It's a common cathode type.
Every time I had problems with the horizontal hold and there was one used, that was the first item I replaced. It corrected the problem 90% of the time. I always carried them in my tube caddy.