This is in for a scrambled picture on the CRT. Hopefully, just a monitor chassis rebuild will do it, and not a PCB issue. To be determined.
BTW: This thing is huge! about 1/3 larger than a typical cocktail cabinet. Never seen one before this one.
Updates: Bummer, the monitor tests good, but the PCB is bad. Cleaned a significant amount of corrosion off the PCB and tested again, but with no luck. PCB found and purchased from eBay. Tested and adjusted the power supply. Found that the 2 Galaga start buttons are bad and will be replaced.