It's been a couple very, very frustrating weeks, but I think I'm in the home stretch. First, I liberated a replacement pot from my Airline set. Then, I discovered that not only did the sync/dc restorer circuit differ markedly from the schematic, but some parts were only connected at one end! Apparently, someone was tinkering with it way back when. I decided to rebuild it from the ground up according to the schematic.
Now I had a much brighter picture, but the horizontal sync went to hell
It appears I was wrong about this CRT - it still has some life in it
So, I started putting old parts back in (or new parts with the old values regardless of what the schematic called for) following the reference picture I had taken. Finally, when I got to the horizontal phase inverter, I got my sync back
Only problem now is the retrace lines are very prominent.
I remembered seeing an article at the ETF on a retrace mod and
dug up this page. I was surprised to find that this mod was already in this set, but it wasn't doing the job. I experimented with the RC values and finally, got a bright, stable picture with no retrace lines
Time to fire up a test pattern and get that picture all squared away!