Step 3 use an eraser.
Cleaning brass electrical contacts.
Continue to scrub the copper contacts until the head of the cotton swab is black.
Apply a spray coating of the contact lubricant.
Oxidation of metal parts because of humidity and old leaking batteries is a common cause of corrosion.
Use vinegar to clean the pins if contact cleaner is not available.
Dirty or corroded contact.
Brush the pins again to remove any left over debris.
In this video i ll show you a quick way to clean your electrical contacts and connections.
This is especially the case with cartridge video games.
Electrical contacts may get dirty with normal use which can affect an item s performance.
Use as many swabs as you need to get them clean.
Corrosion on electronic contacts can dramatically impact the performance of a device which may become inoperable if the corrosion clogs the power contacts to the point the electrical circuit is broken.
You can t clean an electrical contact with water but there are some products that are safe and effective.
Copper contacts can also become dirty with black scuff marks if the contacts have something inserted and removed on a regular basis.
Do not use sandpaper or wire brushes to clean contacts.