​​How to Remove Corrosion from a Circuit Board


Even if you don’t actively work on electronics projects and gadgets, you should be aware that printed circuit boards (PCBs) are essential and necessary if you have many contemporary electrical devices and appliances in your house.

Despite their small size, these devices are vulnerable to corrosion because of their small size. We’ve put together this comprehensive tutorial to help you remove rust from your PCB before it does any harm or malfunction.

Factors Contributing to Circuit Board Dirtiness and Contamination

When electronics and appliances are placed with a PCB or printed circuit board, they may still get contaminated and unclean. So why is this happening? It’s a straightforward question to ask. 

The most common cause of circuit board of corrosion being contaminated or dirty is that all devices have openings that allow air to enter, which may carry dirt, debris, and other pollutants. Long-term exposure to both moist and dry pollutants might degrade your PCB.

How to Remove Corrosion from a Printed Circuit Board in Exact Detail

Corrosion may be challenging to remove from circuit boards, and you may need to employ cleaning chemicals or other components to remove it. Listed below are both chemical and non-chemical solutions to this problem, including:

Air Compressors

Compressed air is one of the most advantageous cleaning agents for working on circuit boards since it can remove rust from a safe distance, making it one of the safest cleaning agents. Because you are utilizing high-pressure air, it also enables you to remove any more dust or debris that may be on your circuit board.

Sodium Bicarbonate, or baking soda

The sodium bicarbonate in baking soda breaks down the corrosion into smaller bits, making it easier to clean. The rust and dirt on your circuit board will be easy to remove.

Water that Has Been Distilled

Since tap water might harm your circuit board of corrosion components, it’s best to use distilled water when cleaning your board. Cleaning your circuit board after using a chemical-based cleaning product might be more accessible.

Isopropyl Alcohol 

You may clean your circuit boards using chemical cleaners like isopropyl or rubbing alcohol, which can remove flux, rust, and other types of dirt, debris, and change. When cleaning circuit boards, the most effective solution is 90 percent isopropyl alcohol.

Corrosion Removal Tools for Circuit Boards

You’ll need the necessary cleaning equipment and an efficient cleaning solvent to clean your circuit boards properly. If you don’t want to ruin your circuit board when cleaning, you’ll want to use a cleaning tool like the one listed here.

Microfiber Rugs and Cloths

Microfiber cloths and rugs are excellent for quickly removing dirt, corrosion, and chemical agents from surfaces. Using a microfiber cloth will ensure that no lint is left behind.


Use a paintbrush to get into the tiniest of spots without harming the circuit board. They are so soft that they won’t scuff your circuit board, which is a massive plus in preserving your board’s integrity.

Blow-dryer or Hairdryer 

A blow dryer or hairdryer is similar to compressed air in that it operates without touch. To avoid leaving any residue behind, you must thoroughly clean and dry your circuit board when using liquid cleaning solutions.


Corrosion on a circuit board may be fatal, thus it’s critical to clean it thoroughly. The material on the circuit board Of corrosion should be extensive.

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