Admiral 19A1, no vertical sweep (video attached)

[jr_tech]

Originally Posted by Kamakiri

Or am I being too picky?

You should be able to get the picture more linear than that... Are the voltages ok? Do you have other 6SN7s and 6SL7s to swap? (sometimes a tube test does not tell the whole story).... Once, in one of these sets I mixed up the 6SN7 and 6SL7 and the set worked *almost* ok, but had height problems.

jr