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I have filament voltage in the IF strip. I don't have a high voltage probe. I suspect that I may have high voltage, and that something is driving the tube to cutoff. I need to measure voltage on "the yellow wire" then run some more voltage checks, verifying that the horizontal oscillator is running. Like many who work on old TV;s for the first time, I struggle to be patient. I'm trying all the suggestions I have read, starting with certain voltage checks. Every voltage I have measured so far has been right on right on. I need to get the raster back before I can do much else in the way of troubleshooting. If a control, such as the brightness control, were to open, would that cause the CRT to be dark?
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