Replacing the tubes didn't help much so I tried signal injection. Here's I'm injecting composite video directly into the grid of the first video amp.
While hooking it up I noticed I missed the 0.047uF coupling cap to that grid. I expect replacing it will improve the things.
Injecting with that cap in place, I do get an image but vertical height, linearity and hold are all terrible.
I expect replacing the electrolytics in the vertical circuit will help with all that.
