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Well, Eric, you owe me a donut. Or, perhaps, maybe a donut hole... I went over the set, and didn't see any other major faults, so I went ahead and plugged in another 1X2 and fired it up. Tubes all light up, and I soon get a roaring noise from the speaker that's odd - not your usual 60 cycle bad filter cap hum - this is more like motor boat sort of noise - and it's affected by the vertical hold control. Turning that changes the pitch of the noise (makes the boat go faster or slower...). The noise is unaffected by the volume control, but if I turn up the volume, I can hear normal static in the background of the overpowering motor boat noise.
The horizontal oscillator appears to be running, I can hear the horizontal, and the horizontal hold control changes the pitch of the squeal. Brightness and contrast controls at maximum, I can't get any light on the screen. I *thought* I saw a single flash, but I was not able to reproduce it. Even shutting down the set doesn't produce the usual flash on the tube. I don't believe I'm getting high voltage, I can't feel it on the screen (although there is that plastic cover over the CRT), and after the set it shut down, there isn't even the slightest zap when discharging the CRT. I didn't hear any high voltage crackle either. I'll have to dig out my HV probe and actually measure it, but, I'm pretty sure there isn't anything there.
But, it's kinda almost working. It wants to go. It's going to need, at very least, some new electrolytics, as I'm fairly sure that's the cause of my motor boat noise. Need to find the schematics too. It's in Sams 457-1. I checked with a local source here, and he doesn't have that folder.
-Ian
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