Hmmm. I don't know. It's interesting, though - with the width control gone from the circuit, and a 250-pf cap in the drive, the picture's missing all vertical drive lines, etc. It's a slight bit off size.
The width control according to Sams is 50 ohms DC resistance. I'm getting in the 20's.
I wish I knew what inductance range it was, I'd get a few fixed inductors in the range and swap them in and out and see what happens. At one time, this set wasted a flyback and yoke - I'm starting to think the width control was a victim, too.
I don't know where I'd find another one, I guess it could be rewound, but I don't have the winding equipment to do it
The other outstanding issue is I can't get the set to focus right - the focus control either has little/no effect, or in other places just shifts the raster slightly. I can juggle the ion trap magnet around, and that affects focus, too.
Does anyone know how the magnet and all on a 19AP4 is supposed to be set up? I have just one magnet, but I know nothing about these weird bent gun type tubes...