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#13

03-26-2018, 04:27 PM

old_tv_nut old_tv_nut is offline

See yourself on Color TV!

Join Date: Jul 2004

Location: Rancho Sahuarita

Posts: 7,754

Are the filaments in series, or is it possible to pull the audio amp tube and see what happens to the hum? Do you have a tester to check the audio output tube for heater/cathode short, or a spare output tube?

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