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cathoderay57 · 17th Oct 2020, 4:03 pm

Re: hum. Since you've replaced the volume control, with modern replacements the pot's metal shield doesn't always make a good earth via the mounting nut and so it might be worth soldering a bonding lead from the pot case to chassis.

17th Oct 2020, 4:03 pm	#28
cathoderay57 Nonode Join Date: Oct 2017 Location: Bristol, UK. Posts: 2,389	Re: Marconi 346 Radio Re: hum. Since you've replaced the volume control, with modern replacements the pot's metal shield doesn't always make a good earth via the mounting nut and so it might be worth soldering a bonding lead from the pot case to chassis.