Oh, i almost forgot: One of the most important things I learned about capacitor voltages involves the fact that AC voltages on the plate feedback circuit of vertical output tubes can far exceed the DC voltage. On most schematics, it says "do not measure", yet an OEM 600volt cap is feeding back to the vertical in a multi-vibrator configuration. These caps should be 1600 volts minimum. Many a Philco BW recap and subsequent vertical collapse taught me this lesson.
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