Expertise Needed

[VA561]

I hope someone at videokarma can share their knowledge/experience to help repair this set. I have a 1959-60 Sylvania halolight tv, model 21C09W. As I am a relative beginner with this hobby, I took the set to a friend of mine who operates a tv repair shop. I first had the tubes tested and one turned up shorted (5T8). After installing the tubes, he used a variac to try to slowly power the set up. No picture, no sound. He then found a fusible link that was blown.After repairing that problem, the set was slowly powered up and we had sound and the picture that is attached below. He diagnosed a vertical issue with the set and checked all of the caps and resistors in the vertical circuit. I highlighted on the schematic all of the caps /resistors that were checked and replaced if bad.

The problem is still not solved. In his opinion, the only potential problem areas related to the vertical issue are a defective vertical transformer and/or yoke. Advice would be appreciated.