I'm going to warn you, unless you know exactly what you're doing, DO NOT MESS WITH CRTs. They are EXTREMELY dangerous when you don't know what you're doing. The voltage across a CRT is enough to kill you instantly if you are not careful. CRTs operate on thousands of volts, and they store that voltage in the tube like a capacitor even after they are turned off. You must first discharge them, by putting a resistor between the TUBE GROUND and the anode to bleed off the stored current. The earth ground is not a substitute for the tube ground. Since the tube is like a capacitor, just connecting one leg of it to the earth ground will not discharge it, you have to bleed the voltage across both leads of the CRT.
I'm not saying you don't know what you're doing, I just thought I'd say that just in case, as some people are not aware of the potential danger when servicing old CRT devices.
I'm not an expert in CRTs, but your CRT is definitely powering up. If the tube was vented, there would be sparks and a loud screeching sound coming from the back of the tube. It sounds like there is something wrong on the tube driver board, like maybe the board was damaged in shipping. I would advise against poking around it by yourself, as that board is the same board that has the high voltage components on it, such as the flyback transformer. I know you may not regard this as particularly helpful, but I would advise to find someone with more experience with CRT circuitry to help you in this project.
"And remember, this fix is only temporary, unless it works." -Red Green