Need help with Beltron 2972-E

[Aperna1985]

Hey guys I wanted a Beltron for a long time and I finally picked one up. When I bought it I didn't realize that the cable had been cut up. I'm wondering if there's a schematic out there or if someone just knows what I have to do to fix it. It looks like the previous owner tried to add a more modern tube socket to it, and just have to everything up in the process.

I noticed the resolution of all the pictures was fairly degraded after shrinking them to fit on here. So I also uploaded them to my Google Drive here is the link to the folder

https://drive.google.com/drive/folde...e3rk1vDqsKzAq4