We have a good cross section of HP parts for test gear, plus an
extensive on line cross reference for HP semiconductors, and a look up
table for many CRTs. you can see this info here:
we are always looking for HP parts in good condition for repairs,
especially knobs, CRTs and display parts, happy to trade or buy.
We also have a lot of items that get scrapped as not worth repair,
happy to send for free for the cost of shipping, especially to
schools, if you tell us what you are looking for.
all the best,
walter