Trystan Casey
Corrosion on electrical contacts can be a frustrating and sometimes catastrophic issue. Automotive connectors are particularly susceptible to corrosion due to their exposure to moisture, thermal shock, vibration, chemicals, and road grime. While physical damage may necessitate the replacement of wires or connectors, there are several methods to clean and remove corrosion from electrical contacts. The most common approach involves using an electrical contact cleaner, such as Deoxit, CRC Electronic Cleaner, or aerosol electrical connector cleaner. Other suggestions include using fine sandpaper, a brass brush, or even an old toothbrush with dish soap. After cleaning, a neutralizing solution of water and baking soda can be applied to prevent further corrosion, followed by electrical grease to ensure easy unplugging in the future. In some cases, a thin polymer film, such as Stabilant 22A, can be applied to provide a conductive layer between mating surfaces while remaining non-conductive between adjacent pins.
Characteristics and Values Table for Removing Corrosion from Electrical Contacts
| Characteristics | Values |
|---|---|
| Tools | Brass brushes, sandpaper, nylon/toothbrush, dremel with a wire brush, pencil eraser, file tools |
| Cleaners | Deoxit, CRC Electronic Cleaner, baking soda, acetone, alcohol, isopropyl alcohol, electrical contact cleaner, Corrosion X, aerosol electrical connector cleaner |
| Grease | Electrical grease, dialectic grease, Ford XG-12 electrical grease |
| Other | Stabilant 22A (leaves a thin polymer film), neutralizing solution (water/baking soda) |
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What You'll Learn
- Using abrasive tools like brass brushes, sandpaper, or a dremel with a wire brush
- Applying cleaning solutions such as baking soda, acetone, or isopropyl alcohol
- Using electrical contact cleaners like Deoxit or CRC Electronic Cleaner
- Applying grease, such as Ford XG-12 electrical grease, to prevent future corrosion
- Cleaning individual pins with a toothbrush and dish soap
Using abrasive tools like brass brushes, sandpaper, or a dremel with a wire brush
Abrasive tools such as brass brushes, sandpaper, or a Dremel with a wire brush attachment can be used to effectively remove corrosion from electrical contacts. Before using any of these tools, it is important to assess the extent of the corrosion and determine whether it is safe to proceed with cleaning. If the corrosion is severe or the electrical contacts are delicate, it may be advisable to consult a professional or consider alternative cleaning methods.
When using a brass brush or similar abrasive brush, it is important to work gently to avoid damaging the electrical contacts. Wear protective gloves to guard against irritation from any corrosive chemicals present. Begin by sprinkling baking soda onto the contacts and then use a spray bottle to apply water, causing the baking soda to fizz. Scrub the corroded areas with the brush until the corrosion is removed, and then rinse the cleaned area with distilled water. Finally, dry the contacts with a microfiber towel before reconnecting any cables.
Sandpaper can be used in a similar manner to a brass brush. Start by rubbing the sandpaper gently on the pins to remove any corrosion and debris. Follow this by brushing the electrical contacts with a toothbrush or similar abrasive tool. Finish the cleaning process by applying vinegar or alcohol to the contacts with a microfibre cloth or cotton swab, ensuring that they are completely dry before reconnecting any cables.
A Dremel with a wire brush attachment can be an effective tool for removing corrosion from electrical contacts. The Dremel's small size and rotary action make it ideal for cleaning flat surfaces and hard-to-reach places, such as slots. It is important to select the appropriate brush attachment for the job and to follow the manufacturer's instructions for safe and effective use. As with the other methods, it is crucial to ensure that the electrical contacts are completely dry before reconnecting any cables.
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Applying cleaning solutions such as baking soda, acetone, or isopropyl alcohol
To remove corrosion from electrical contacts using cleaning solutions, you can use baking soda, acetone, or isopropyl alcohol.
Baking Soda
Baking soda can be used to clean corrosion from electrical contacts, including battery terminals and connector pins. It has abrasive and alkaline properties, which help to neutralise and clear corrosion from metal surfaces without causing damage. To use baking soda, mix it with water to form a paste, and apply this to the contacts with a cotton swab in a circular motion. Leave the paste to dry, then remove it with a wipe.
Alternatively, you can sprinkle baking soda powder directly onto the contacts and then spray water onto it until it starts to fizz.
Acetone
Acetone-based nail polish remover can cut through dirt and grime on electrical contacts. It dries quickly but is highly flammable, so it should not be used near sparks, flames, or heat sources. It can also damage rubber and plastic, so be cautious when using it on electrical contacts with these components.
Isopropyl Alcohol
Isopropyl alcohol is an effective DIY cleaner for electrical contacts. It is strong enough to dissolve dirt, grime, oil, and corrosion, yet gentle on delicate electrical parts. It also dries quickly, reducing the risk of liquid damage. Ensure you use 91% or 99% isopropyl alcohol, as these concentrations contain less water and are less likely to cause moisture damage. However, be cautious when using it on contacts with rubber or plastic parts, as it can damage these materials. Isopropyl alcohol is also flammable, so avoid using it near open flames or heat sources.
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Using electrical contact cleaners like Deoxit or CRC Electronic Cleaner
Deoxit D5 is a popular contact cleaner that can be sprayed directly onto electrical contacts to remove corrosion. It is important to ensure that the system is powered off and unplugged before spraying. After spraying, simply put the RAM or video card into the slot and power on the device. Deoxit D5 does not conduct electricity or cause short circuits, so it is safe to use even if it hasn't fully dried.
CRC Electronic Cleaner is another option for removing corrosion from electrical contacts. It is a quick-drying, precision cleaner that is safe to use on sensitive electronics and plastic parts. It is made from petroleum distillate and alcohol and is designed to clean and protect electrical contacts. It can be sprayed directly onto the affected area and left to dry without the need for wiping.
The CRC Electronic Cleaner comes in different colours, each with its own specific use. The red can is safe for cleaning computer components, while the blue can is suitable for consumer-grade applications and is safe to use on plastic and metal surfaces. The green can is used to remove corrosion from PCB.
Both Deoxit and CRC Electronic Cleaner are effective at removing corrosion from electrical contacts. It is important to follow the instructions and take the necessary precautions when using any contact cleaner to ensure the safety of the user and the device being cleaned.
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Applying grease, such as Ford XG-12 electrical grease, to prevent future corrosion
To prevent corrosion on electrical contacts, dielectric grease can be applied. This grease is an insulating compound that protects electrical connections from moisture, corrosion, and other environmental factors. It is specifically designed for use in electronic and electrical applications, where maintaining insulation is critical to the device's function.
Applying grease, such as Ford XG-12 electrical grease, is an effective way to prevent future corrosion on electrical contacts. This grease is designed for automotive use and can be used on electrical connections, including airbag connections, to prevent corrosion and solve airbag malfunction lights on certain vehicles. It provides a non-corrosive film for electrical switches and contacts, shielding connector metals from oxidation and corrosion.
Ford XG-12 electrical grease is available in a 3 oz tube or bottle and can be purchased from hardware stores or online retailers like Amazon. It is recommended to follow the instructions on the packaging for application guidance and to ensure that the grease is compatible with the specific application and environmental conditions.
In addition to Ford XG-12 electrical grease, there are other products available that can help prevent corrosion on electrical contacts. These include silicone dielectric grease, De-Ox-Id grease, and Corrosion X spray. It is important to note that dielectric grease should not be used on 12V connections, as it is an insulator and can block electrical signals.
To effectively prevent future corrosion, it is crucial to first clean the electrical contacts and connectors. This can be done using an electrical contact cleaner, such as Deoxit, and a nylon or brass brush. It is important to avoid using harsh chemicals or steel brushes as they can damage the electrical components. After cleaning, the contacts should be dried and a small amount of grease can be applied to protect against future corrosion.
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Cleaning individual pins with a toothbrush and dish soap
If you are cleaning individual pins with a toothbrush and dish soap, it is likely that you are dealing with a highly corroded electrical connector. Before attempting any cleaning, ensure that the power source is disconnected.
Firstly, remove any dirt or oil from the pin or connector. Then, take an old toothbrush and dip it in some dish soap. Scrub the pin with the soapy toothbrush, applying firm pressure to remove the corrosion. You may need to work the brush into tight spaces to reach all the corroded areas. Rinse the pin with water to remove any remaining soap and corrosion residue.
It is important to note that this method may not be suitable for all types of electrical connectors. Some connectors may require a more gentle approach, such as a nylon or brass brush, to avoid damage. Additionally, some sources suggest using a cleaning solution, such as an electrical contact cleaner or isopropyl alcohol, followed by a neutralizing solution (water and baking soda) to prevent the cleaner from damaging the base metal.
After cleaning, dry the connector thoroughly before reassembling or reconnecting it. You may also want to apply a small amount of electrical grease to prevent future corrosion and ensure easy disconnection.
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Frequently asked questions
A good electrical contact cleaner is Deoxit. Other brands like CRC or Permatex will also work.
A simple way to clean electrical contacts is to use ordinary isopropyl alcohol (a.k.a. isopropanol) to clean the contacts and then dry thoroughly before reconnecting.
After cleaning, transfer the part into a neutralizing solution (water and baking soda) and swish it around for 20 to 30 seconds. This will prevent the cleaner from eating away at the base metal.
