By all means there are a number of questions that should be answered before a replacement board is selected:
- original part number of tube such as A68#####
- original part# of yoke
In many cases I can cross reference most of the rest, but not all.
If not impedance is most important, Circuitmate offers a very low cost LC meter for this (like $40).
- Pin cushion free or not?
- Curved tube or flat?
- Single focus or double focus?
- type of Socket. sometimes the pinout and rotation is different.
we offer replacement boards for many tubes but only after we get all the answers, after all if you are not happy, then we are not.
Hope this helps??
Rick@niemandisplays.com