OK guys. I've been asked to look this chassis over and see if I can find the problem. Well I can't.
The background is that it has been recapped and some of the resistors have been replaced. It did have vertical when first tried but then lost the vertical soon after. The Vertical Centering pot does move the trace up and down. The Vert. Lin. pot has little effect.
Here's what I did so far.
1) I checked out the Vert. Osc. and the Vert. Output transformers. Both ohmed out good.
2) I ohmed out the yoke and it checked good.
3) Checked the tubes in the Vert. section along with the tubes in the Sync section. All tested in the good range.
4) Traced all the components in the Vertical section to see if they went where they were supposed to along with their values. All looked good.
5) Checked and cleaned both the Height and Vert. Lin pots. Both checked good on the ohmmeter.
6) Did a through visual for shorts, solder blobs, etc.
7) Tapped on the chassis some but that didn't help either. :>).
Here's a picture and then a video of the situation.
Any ideas guys?
And the YouTube video:
https://youtu.be/RyM6xCjcXiY