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The hot grid goes negative from the action of the output cathode and grid rectifying the osc signal. If the osc voltage and waveform look ok then that signals it is time to populate the output and check it's grid voltage like you did.
It was pretty exciting to hear the hv come up and see a raster. It's an ugly raster but it's a raster!
09-28-2019, 10:52 AM
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