Minor update. I ordered some 470pf 10KV ceramics and installed them on the flyback in the voltage doubler circuit (two 1B3s in this TV), and I get 12KV now, which according to Tom, is right in the ballpark.
I have an image of sorts, but it's extremely overdriven. In fact, with the brighness control anywhere except all the way down, it blooms to the point of HV loss. It also has short vertical deflection.
There are some .05s which are clearly leaky in the chassis as they are throwing the DC voltages of is several circuits, but what's odd is the extreme ringing visible:
Hoping the ceramics in place of the 10KV film caps aren't causing issues.
John
EDIT: the raster is actually full horizontally. If I adjust the contrast, the screen will wash out and fill the screen, although it remains darker on the right side. The ion trap affects it but won't change what I see when the brightness and contrast show a clean snow pattern. Also, I
don't want to shotgun this particular unit as I am am working through it as if it was a fairly new TV to bone up on my vacuum tube skills. I started in this trade at the end of the tube era but still worked on many through the late seventies.
Surprisingly, the CRT is strong. I found this TV with a brightener hanging off the back of the tube, and coupling with the fact that this metal coned beastie isn't known for a long life anyway, expected to find the tube junk. On my tester, it actually showed decent emission after about 10 minutes. When firing up from a cold start, I get a very bright partial raster in about 30 seconds, so I think I'm good on the tube anyway.
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