Rca trk9

[s-petersen]

Hi,
I'm not regular on this site, but a fixture on Audiokarma.
A friend of mine had his TRK9 restored , restuffed caps and all.
The problem is that he brought it home and it is not working, the screen would not light at first, but that seemed to resolve itself.The TV sound is low with a predominant hum, the picture is diagonal lines, I am going to see if I can help him tomorrow, I am aware that the picture sounds like vertical hold.
I regularly work on tube audio, I'm just trying to help my friend.
The person who rebuilt it is trying to guide him, but my friend is is not a tech person. The rebuilder lives several hours away , so if I can't figure it out, it'll be a long drive to return it.
The chassis was brought in person to to rebuilder, and picked up as well, so no shipping disasters.
Are there any newbie mistakes in the setup of the chassis being installed in the cabinet? I am just looking for the simplest mistakes before I try to sort it out.
Any tips are greatly appreciated.
Thanks,
Scott