For me first if you dont have one is a combo
isolation/variac unit like the Sencor PR57 or it
equivalent. Indisposable for solid state work.
Very useful otherwise. The metering makes them super
useful. Also the lack of 2 units plus wires, meters & clutter
makes them a joy to work with. Bad side is that makes
them still pricey...
Next is an analyst. Again Sencore VA62 or equivelent.
Will drive any stage of a color TV. Also test yokes, FBT's.
Test patterns & a bias supply round things out. Does a crap
load more...... Be SURE its clean, has all the docs & leads.
Very reasonably priced IMHO.
HV probe. Useful but rarely essential especially on solid state
sets. Cheap....
CRT checker. Nice to have although you can check a CRT
with a meter & an operating set. Be SURE its modern.
Also that it has its set-up charts & adapters. You can
build a universal adapter easily and should. Rejuvenation
is why to keep things modern. Not just a brute force cook it
& zap it. Newer ones are gentile & can bring an old CRT
back to life for a long time.
enuf fer now
73 Zeno