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The buzz is definitely coming from the speaker, not the transformer. Adjusting the volume control doesn't change the buzz at all. It's just not as noticeable when I'm tuned into a strong station. I clipped in a 4.7uf across the 2uf, nothing changed. Where do I test for high voltage? I clipped the positive lead of my meter onto a filament of the 80, negative on the chassis, and got 185 volts with or without the extra capacitor in the circuit. I hope I'm not asking too many dumb questions. This is my first old radio repair, so I want to get it right rather than destroy it guessing! I sure appreciate all the tips they've been very helpful.
Thanks again!
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