I've been blessed!

[old_tv_nut]

Tom, you seem to have a different type of magnet assembly. The one in my picture is supposed to be placed as shown with one end over the internal blue pole piece. When I first got the set, I thought maybe it was accidentally shifted, but no. It is shown this way in both the RCA and SAMS manuals for the CTC-5, and is working properly in this position. I don't think there would be any difference based on changing to a 21FBP22, but there would be a difference if I had the same type of lateral magnet that you do. Steve Dichter sent me a couple of scans from different publications also showing the type I have mounted the same way mine is.

It appears that the end of the cylindrical magnet in mine is broken off, or at least an adjustment knob is broken off. It's still functional, but loose, and that is apparently why it was taped in position.

Edit - thanks for the photos with dimensions - I will compare to what I did.

[Tomcomm]

My wife dragged it home from a garage sale in 1996 for $35. I fixed the remote and got a picture with no ant. Since I had no interest in TVs at the time it just sat disconnected in my office collecting dust. I finally fired it up on a test DVE disc thru a modulator a couple of days ago and got a bright, fine detailed picture with accurate color and near perfect focus! Well that got me interested in learning more about it.

Its a 25in Zenith System 3 made in Springfield, Missouri in April 1986. The CRT is A63AAX02X with a backward cap R sticker which makes it Japanese, right? The screen is stripped like my Sony Trinatron and probably has inline guns. When I took the back off, the CRT has NO convergence assembly like the Sony, just three purity rings stacked together! The yoke has only the usual 4 wires, so no dynamic convergence in here.? The ultor is a single conductor, so no electrodynamic convergence like the Sony Trinatron. I thought the Trnitron was hard to understand but this Zenith thing is spooky!

The plug in assemblies are noted as follows:
Video output 9-467-01
Main module 9-518
SM pwr supply 9-520-02
Tuner 175-2277-01

So what do the Zenith Gurus make of this. Its got 10yrs of main TV use, then retired for 13yrs and still produces a picture as good as any of my analog TVs with the obvious exception of the Sony PVM1334 super-fine pitch pro monitor.