I got all the parts last Thursday...except for that one resistor, which shipped separately and didn't arrive until today. Put all 3 parts in and...still broken
It did behave differently this time though. I had the game board disconnected from the monitor so that I could see if the "no signal" appeared on the screen first before trying to boot up anything else. When I turned on the power, there was a sizzle of high voltage going to the CRT, so that was good, but then the chassis board starting making a quickly repeating clicking sound, similar to a geiger counter. There was also the normal clicking of a relay that I heard before, but still no image on the screen.
I turned it off, then reconnected the game board to see if having a signal would make a difference. Turned it back on and the sizzle, clicks, and relay clicks were there again, but this time the geiger counter clicks got quieter and the relay clicks got slower. Sure enough, there was an image trying to form on the screen, but it was all garbled with micro-seconds of dim clarity of the "no signal" image.
*EDIT* The neck was also glowing, so I assume that means it's getting enough power to run the tube, but just isn't getting a good video signal.
Then there was a loud BANG and I saw a spark at the neck board. I shut everything down, let it cool down for a few minutes then took the neck board off to see if any components exploded. They all looked visually fine; I think it was just a grounding discharge. Not sure why that would happen.
The new clicking sound was coming from the same corner of the board that all the horizontal collapse components failed around.
The spark on the neck board was just left of the neck if you're looking at the back of the board.
I haven't taken anything else out to inspect. Getting a little tired of this monitor. Although, it's technically no longer horizontally collapsing, so I guess that's a win. It's just fritzing in all directions now.
I will now open the floor to any questions and suggestions for the next course of action.