Re: Tektronix 7b92a shuts down crt & graticule illumination on 7904 mainframe
Great story Stephen, and great ending to the 7B92A repair! Now, if you want to up the anti for your collection, keep an eye out for a 7904A - they are of course newer, and have a bunch of little improvements on the classic design.
Since you said you also have a 2465A, (I have one too, as well as a 2467A, another Tek masterpiece) a site to be aware of is Dr. Hugo Holden's electronics page, http://worldphaco.com/
He has some wonderful papers on 2465A repairs, including dealing with the eventual failures of the clock/memory chip, electrolytic leakage damage repair, etc.
Reinhard MetzBell Labs retired