There are a few soft spots in these sets.
If it is high mileage they can really get dried up. tube sockets often
go bad from the heat. Watch the flyback. A little wax drip is usually OK
but they went bad a lot, actually melting down & burning. If mine I
would change ALL the 6GH8's at once to NOS brand name tubes.
That will eliminate most the little intermittents that can drive you up a
wall. 'GH8's have a habit of not working in some circuits but OK in
others. The also test good when bad & bad when good much more
than normal. DONT trust them !
Not to worry about CRT. Even if its bad it is probably easier to find
than a new flyback.
When done the set can give an excellent pix. I also recommend a
muffin fan to suck the heat out of the HV area. You will get enuf to
heat a few rooms

Enjoy your new aircraft carrier !
73 Zeno

LFOD !