When bourns trimmer is used for a long time, it will lead to some serious wear and tear, which will affect the performance of the use. So generally using friction cleaning method can not solve the problem at all, such as the phenomenon of contact and carbon diaphragm fracture, then how to repair these faults, if not technicians, you also do not understand, then the following details to you about bourns trimmer fault repair methods. Http://www.hk-best.com/bournsdianweiqi/    

Maintenance of bourns trimmer Faults            

Fault Maintenance Method 1            

The main reason for the noise of bourns trimmer is oil stain between contact sheet and lead-out terminal sheet, or the contact resistance is unstable due to the wear of resistance film. So how do potentiometers deal with these failures?            Step 1: First, the surface shell of the potentiometer and the metal shielding shell can be removed.            

Step: Next, dip the cotton ball with anhydrous alcohol on the tweezers clip, wipe the resistor slightly, remove the carbon powder and dirt produced by friction, and then use the cotton ball to remove the oil stain at the connection between the contact piece and the extracting piece. Some bakelite frames with potentiometer contact sheets can be removed from the rotary shaft soil, which makes it easier to remove grease and carbon powder from the resistors.            

Step: After the cleaning is completed, the original step is installed, which can solve the problem of high fault noise of bourns trimmer.            

Fault Maintenance Method II            

When bourns trimmer is used for a long time, it will lead to some serious wear and tear, which will affect the performance of the use. So the general friction cleaning method can not solve the problem at all, such as the contact plate and carbon diaphragm fracture, such problems are generally solved by the replacement method. First remove the damaged bourns trimmer from the equipment, then separate it, replace the damaged and carbon diaphragm with the good components of the old potentiometer, and then combine.            

Fault Maintenance Method 3            

The wear and tear of bourns trimmeris not serious, and the problem is only that the noise or volume of the sound appears when adjusting. This is mainly due to the dust intruded into the process of using bourns trimmer or the dust produced by the contact spring under the constant friction with the carbon film, which pollutes the contact points, resulting in poor contact between the contact spring and the carbon diaphragm. In order to further solve the problem, we can clean the bourns trimmerwith cleaning fluid after friction, thoroughly wash the dirt on the carbon diaphragm of the potentiometer, and make good contact with the carbon diaphragm.            

Failure Maintenance Method IV            

In order to prolong the service life of the repaired bourns trimmer, a little silicone grease is often applied on the carbon diaphragm of the bourns trimmer (sewing machine oil is also possible). The advantage of this method is to prevent arcing. Because the lubrication of silicone grease reduces friction with the carbon diaphragm, the resistance change of the bourns trimmer is balanced and smooth, and the performance effect is good.