Say hey!
Try the fine tuning. When you get some recognizable video, try the horiz. hold as the horiz. frequency looks to be quite a ways off. What does the raster do now when you turn the contrast control stop-to-stop?
Mayhaps some kindly soul will post the left-hand side of the schematic. It's hard to tell if there might be some kind of AGC control there or not.
oc