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What if the rotating noise of the adjustable potentiometer is loud_ The problem we will encounter is that the rotating noise of the adjustable potentiometer is large, so how to solve it? Today, I will teach you how to clean and repair the problem of loud rotating noise of the adjustable potentiometer. The specific method is to fold the pure alcohol detergent to the carbon film inside the adjustable potentiometer, and turn the handle continuously to make the contact slide on the carbon film to achieve the purpose of cleaning the carbon film and contact. This cleaning can be carried out with power on. It should be noted here that pure alcohol must be used. Then turn the crank to listen to the noise until it disappears. How to make the cleaning fluid flow onto the carbon film? 1. For direct-slip carbon film potentiometers: drip from the handle gap. 2. For carbon film potentiometers that cannot flow from the outside: