I replace the four HV deflection caps and got a full raster.
Then, I finally realized I had made a stupid assumption that the channel #s went clockwise. So instead of tuning to my RF signal source on channel 3, I was tuned to channel 12!
I might have had a picture form the start. We'll never know.
The loud audio buzz was caused by a bad cap between the volume control arm and the grid in the audio preamp tube.
Somehow that was causing the high impedance circuit to pick up all surrounding EM radiation. Just moving my hand near the cap cause all sorts of noise.
Replacing the cap resulted in OK sound, but it's way off from the picture. Odd considering this is an intercarrier IF set. The 4.5 MHz pickup coil must be misaligned.
The focus and centering controls are acting flaky now so I'll pull the phenolic sub-assembly out for a going over.
I figure there could be tin whisker or gunk attracted by the static charge.
