John-Del wrote:

Don't waste your time trying. CRTs don't short that way. If the CRT is
full of air, the tube will arc loudly. You could ground the second anode
cup to the metal frame and it still won't smoke the flyback. Any secondary
short will destroy the horiz output or open the B+ fuse (or both) way
before the flyback can smoke. If the flyback smokes, it's bad.

ok I stand corrected :-)
I've never happened to find a bad flyback anyway.
Why the B+ fuse don't open (or the output transistor blows) when
the transformer primary is shorted? The load should be quite far away
from normal. Maybe it has other secondaries with shorted loads?

Frank IZ8DWF