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Original Message
You could use the old light bulb trick.
Posted by Ralph on April 9, 2020 at 13:27:10:
With no tubes in the unit, put a light bulb in series with the AC power and turn it on. The bulb will light up; if the caps are good it will go out in a few seconds, if not it will stay on or stay on dimly. But the light bulb itself will limit current so nothing gets damaged.