Well here is my status update on this set:

New HOT installed. Resoldered all flyback connections just to be safe. All other components check out on that board.

New 4A line fuse installed. Put the TV back together. Pressed power, and nothing.

Turns out the B+ fuse on the board (turns out I actually have a 9-160-06 board), the 125mA fuse, is not completely blown, but it reads a consistent 28 ohms of resistance. So I shall be ordering a new fuse for that before I can continue testing.
(btw, I messed up in my earlier post, it was the 4A line fuse that was blown when I got the TV, not the 125mA B+ fuse)

Now last time I tried this set about 4 years ago (because I didn't know what was wrong), I installed a new 4A fuse, and it powered on for a fraction of a second: Degauss coil and channel number lit before it blew again.


And my final question for the night: This is due to my failure to have taken pictures or notes on this while taking apart, but on the 9-159-01 Zoom module, does the yoke connect directly to 9C? I ask because the connector coming from the yoke says 3D, but 3D is actually connected from the 9-160 board to 9B on the Zoom module.
I just want to make sure I plugged it back into the appropriate slot (the way the wires are routed, dressed, and length, there is no other slot it could plug into. All other slots are filled.)



And side note, I did test the CRT with a Sencore CR7000: It has very good emissions on all 3 guns, but I cannot get the blue to even go into cutoff (doesn't even move), and red just barely makes it. Green is fine. So we'll see how well greyscale tracking is once I get this set operational.