from FB group Building Transistor Radios 2018-11-30
I’ve done some experimenting on volume controls that are badly worn and noisy. The idea is to substitute some resistance for the badly worn spot. The loud crackling will be reduced and the normal volume point will be moved to a higher point on the control. For a 5k control, I put a 470 ohm resistor between the wiper and the low or common end of the pot. If you can’t find a replacement for a badly worn pot, this is one simple and inexpensive way to get more life out of it.
