Potentiometer troubleshooting method2021

There will be some minor faults during the use of the potentiometer. We can judge rationally. Some faults can be handled by us with hands. Some faults must be replaced by the potentiometer. Here are some common faults and treatment methods for the potentiometer. For your reference!

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One: The potentiometer is often in poor contact due to damage to the carbon film. It can be judged from the appearance that the potentiometer has a poor contact failure, you can first disassemble the shell to check the degree of wear. If it is only a poor contact caused by mild abrasion, use anhydrous alcohol and carbon tetrachloride to scrub the carbon film clean, and then adjust the pressure of the sliding arm on the carbon film appropriately.

Two: There are three situations in which the structure of the potentiometer with switch is damaged: one is that it is constantly off or cannot be opened; the other is that the contact is poor and the on-off is not working; the third is that the switch part is off. These three types of failures can be detected with a multimeter or can be seen by eyes. When repairing, for the first and third cases, new components must be replaced. For the second case, the switch can be repaired according to the problem that occurs. If the poor contact is due to the oxidation of the contacts, scrape to eliminate the fault; if the contact is poor due to the reduced spring force, replace the spring with a new one.