Zenith System 3 CRT help

[zeno]

I never saw the lightning warning & I have opened hundreds of them
over the yrs. Never had a dud inspected either.
Zeniths almost never got lightning damage. They use a VERY effective spark gap
between the the cold ground & both sides of the AC line. I have seen many that were burnt but no damage to the set. The points are very close & I would bet it
will ark over at a few hundred volts. Anyhows its on the 9-160 & the black wire
goes to it.

73 Zeno