Buzz on phono input of radio.
Hi all, help needed please. If you look at the attached schematic, I am having trouble with buzz with the volume control in the mid position. At fully open or closed the normal low level hum is heard at minimum volume, at full volume again louder but normal hum/noise, but mid volume a pronounced buzz. Tried changing the pot and grounding the pot case, but can't stop it.
Anyone any ideas please?
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