I was reading the wrong scale (senior moment)
It's 700V on G2.
Anyhow I reflowed all the pins as suggested, and cleaned the CRT pins, and no go.
It's now in the fault state permanently, the typical look of a very weak CRT.
What had me buffaloed was the slow 'cycling' between the fault state and a nice bright 'brand new' pic. It's gotta be the jug. Still dunno how or why it was doing that.
Oh well, 15 years was a pretty fair life for the set.
Thanks for the feedback.