Admiral 19A1, no vertical sweep (video attached)

[old_coot88]

Going on the assumption that the H frequency is too high (rather than too low), you could experiment with slowing it down by subbing a couple of values.
The 10K resistor.. try something like 15K, 18K, or 22K
The .01 cap.. increase value by adding something like .002, .0033, or .0047 across it.

If this improves things, while not "fixing" it, it'd at least tell you it's moving the frequency in the right direction (ie., down).

[Kevin Kuehn]

Is it safe to assume we don't have a scope at the scene of this repair?

This set is certainly being a little stinker.

[Kamakiri]

Originally Posted by old_coot88

Going on the assumption that the H frequency is too high (rather than too low), you could experiment with slowing it down by subbing a couple of values.
The 10K resistor.. try something like 15K, 18K, or 22K
The .01 cap.. increase value by adding something like .002, .0033, or .0047 across it.

If this improves things, while not "fixing" it, it'd at least tell you it's moving the frequency in the right direction (ie., down).

I subbed in a 20 K resistor. No change.

I added .0047 across the .01 cap. No change.

Man, this is really a tough dog. Should I start scouring Craigslist for a scope?