Okay, I spent some time last night cleaning and adjusting and stuff, and here's what I came up with (sorry no pics yet. With luck, I'll be able to take one tonight):
Got a nice, clear, well-focused green picture after twiddling the fine tuning. Messed with the height, v. centering and v. linearity controls and have a picture that fills the screen. People's heads seem to be the right shape
so I guess I got the linearity right. Straightened up the yoke, but I don't think I tightened it up again as it's a little off. Or maybe
I'm a little off.
Did the gray scale adjustment in hopes of restoring some color. I got nice bright green and blue lines but no red, no matter which bias setting I used. Cleaned the drive controls for good measure but no change. Set had been on for maybe 30 minutes at this point. Snapped it out of service mode and was presented with a really nice BW picture!
This lack-of-red thing has me concerned. If there were really NO red, wouldn't the picture have a blue or green cast to it? It's really nice black and white. The convergence is off at the edges (natch) and I can definitely see some red up there. Does that mean anything? Should I test the tube and maybe give it one of those jolts that "restore" it? Anyone got a tube tester I can borrow?
The color and tint controls still have no effect on the picture, so I'm guessing they're involved in this somehow.
Color or no, I'm really pleased at how much progress has been made with just some minor tweaking. Picture to come!
veg