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Teach you 10 methods to repair conductive rubber buttons

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Teach you 10 methods to repair conductive rubber buttons

Categories:News Center
Time of issue:2021-12-29 17:48
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(Summary description)Remote control, calculator, electronic dictionary, computer keyboard, and other buttons. Most of them use conductive rubber buttons (commonly known as zebra stripes), which may cause the conductive function to fail due to aging after prolonged use. Measure the surface resistance of conductive rubber buttons with a multimeter, and the normal value should be tens to hundreds of ohms. If the resistance exceeds 1K ohms, it may cause poor contact.

Note that conductive rubber buttons are conductors with a certain thickness, rather than just indicating conductivity. After long-term use, poor conductivity generally only appears on the surface. The reason may be that the conductive rubber buttons contained in conductive substances (such as carbon powder) have been worn off, or there is dirt on the surface, and the lower layer should be in good condition.

1. Surface cleaning method for conductive rubber buttons

Clean the surface with rubber wipes, fine sandpaper, various setbacks or small blades. Alternatively, simply cut off the thin layer with a blade. Disadvantages: Some conductive rubbers are thin and easily damaged.

2. Use conductive silver paste

Apply conductive paste to conductive rubber button contacts. Advantages: Good effect; Disadvantage: Conductive silver paste is expensive and difficult to buy.

3. Method of replacing conductive rubber layer

Cut off the failed conductive rubber button adhesive layer, and also cut off the conductive rubber of the unused buttons on the scrapped calculator or remote control that are similar in size to the original cut. Clean the conductive rubber contacts and use silicone rubber to stick the good conductive rubber layer onto the failed button.

Disadvantage: Due to the presence of adhesive, it is sometimes difficult to adhere.

4. Use conductive adhesive method.

Clean the surface of the ineffective conductive rubber button and apply conductive adhesive.

5. Carbon coating method

Place the conductive surface of the key facing upwards, wipe it with a clean cloth, and then reapply with a 2B, 4B, or 6B pencil.

6. Tin foil or aluminum foil method

Use double-sided adhesive to stick a small piece of tin paper or aluminum foil onto the conductive surface of the conductive rubber button.

7. Copper wire threading method

Disadvantages: troublesome, easy to damage buttons and PCB boards, copper wires are easy to fall off and rust.

8. Aluminum plastic packaging paper method

Cut an aluminum foil paper into the aluminum plastic packaging of the capsule, with the conductive side facing upwards. Place the side with the word on the contact point, and press for about 1 second with a 20W flat soldering iron to make the aluminum foil stick to the contact point. (One side of the aluminum foil is coated with hot melt adhesive and can be attached)

9. Spiral method

Find a small copper screw with a flat head, polish the head, and then drill a small hole (not too deep or too large) on the keyboard. Use a little adhesive to screw the screw in.

10. Rubber water pen method

First, use a 6B soft pencil or a graphite brush from a DC motor, commonly known as a carbon brush, and carefully scrape off the graphite powder with a knife. The finer the powder, the better. Before repairing conductive rubber button contacts, clean the contacts with gasoline. Because gasoline can dissolve rubber, it should not be too wet, otherwise contact with external rubber will damage it. Then, apply a small amount of rubber water to the contact points, immediately sprinkle the prepared graphite powder on the rubber contacts, and gently press. After drying for one or two minutes, use a soft brush to remove excess graphite powder from the contact surface before use. If all the above methods fail, the conductive tape can only be replaced according to the size.

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Teach you 10 methods to repair conductive rubber buttons

Categories:News Center
Time of issue:2021-12-29 17:48
Views:

Information

Remote control, calculator, electronic dictionary, computer keyboard, and other buttons. Most of them use conductive rubber buttons (commonly known as zebra stripes), which may cause the conductive function to fail due to aging after prolonged use. Measure the surface resistance of conductive rubber buttons with a multimeter, and the normal value should be tens to hundreds of ohms. If the resistance exceeds 1K ohms, it may cause poor contact.

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Note that conductive rubber buttons are conductors with a certain thickness, rather than just indicating conductivity. After long-term use, poor conductivity generally only appears on the surface. The reason may be that the conductive rubber buttons contained in conductive substances (such as carbon powder) have been worn off, or there is dirt on the surface, and the lower layer should be in good condition.

1. Surface cleaning method for conductive rubber buttons

Clean the surface with rubber wipes, fine sandpaper, various setbacks or small blades. Alternatively, simply cut off the thin layer with a blade. Disadvantages: Some conductive rubbers are thin and easily damaged.

2. Use conductive silver paste

Apply conductive paste to conductive rubber button contacts. Advantages: Good effect; Disadvantage: Conductive silver paste is expensive and difficult to buy.

3. Method of replacing conductive rubber layer

Cut off the failed conductive rubber button adhesive layer, and also cut off the conductive rubber of the unused buttons on the scrapped calculator or remote control that are similar in size to the original cut. Clean the conductive rubber contacts and use silicone rubber to stick the good conductive rubber layer onto the failed button.

Disadvantage: Due to the presence of adhesive, it is sometimes difficult to adhere.

4. Use conductive adhesive method.

Clean the surface of the ineffective conductive rubber button and apply conductive adhesive.

5. Carbon coating method

Place the conductive surface of the key facing upwards, wipe it with a clean cloth, and then reapply with a 2B, 4B, or 6B pencil.

6. Tin foil or aluminum foil method

Use double-sided adhesive to stick a small piece of tin paper or aluminum foil onto the conductive surface of the conductive rubber button.

7. Copper wire threading method

Disadvantages: troublesome, easy to damage buttons and PCB boards, copper wires are easy to fall off and rust.

8. Aluminum plastic packaging paper method

Cut an aluminum foil paper into the aluminum plastic packaging of the capsule, with the conductive side facing upwards. Place the side with the word on the contact point, and press for about 1 second with a 20W flat soldering iron to make the aluminum foil stick to the contact point. (One side of the aluminum foil is coated with hot melt adhesive and can be attached)

9. Spiral method

Find a small copper screw with a flat head, polish the head, and then drill a small hole (not too deep or too large) on the keyboard. Use a little adhesive to screw the screw in.

10. Rubber water pen method

First, use a 6B soft pencil or a graphite brush from a DC motor, commonly known as a carbon brush, and carefully scrape off the graphite powder with a knife. The finer the powder, the better. Before repairing conductive rubber button contacts, clean the contacts with gasoline. Because gasoline can dissolve rubber, it should not be too wet, otherwise contact with external rubber will damage it. Then, apply a small amount of rubber water to the contact points, immediately sprinkle the prepared graphite powder on the rubber contacts, and gently press. After drying for one or two minutes, use a soft brush to remove excess graphite powder from the contact surface before use. If all the above methods fail, the conductive tape can only be replaced according to the size.

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Next: What are acrylic lenses? What is the purpose?

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