Corrosion on main board

If the main board in your Samsung RS261MDBP refrigerator is completely coated in green corrosion and a black plastic component has been affected, it indicates a significant issue that requires attention. Here are some steps you can take:

1. Safety first: Before proceeding with any repairs, make sure to unplug the refrigerator to avoid any risk of electric shock.
2. Assess the damage: Carefully inspect the main board and the affected black plastic component for signs of corrosion, damage, or burnt marks. Check if the corrosion has spread to other parts of the board.
3. Clean the corrosion: Use a soft brush or cloth to gently remove as much of the green corrosion as possible. You can use a mild cleaning solution specifically designed for electronics, or a mixture of isopropyl alcohol and distilled water. Avoid using excessive moisture during the cleaning process and be cautious not to damage any components.
4. Isolate the affected component: If possible, identify the specific black plastic component that has been affected by the corrosion. Take note of any visible damage or signs of overheating. In some cases, the affected component may need to be replaced if it cannot be cleaned or repaired.
5. Consult a professional: Given the complexity of the main board and the potential risks involved, it is recommended to contact a professional appliance repair technician or the manufacturer's customer support for further assistance. They will have the expertise and knowledge to properly assess the situation, determine the extent of the damage, and provide appropriate guidance or repair options.

Remember, working with electronic components can be delicate and complicated. If you are not experienced or comfortable with handling such repairs, it is best to seek professional help to avoid causing further damage to the refrigerator or risking your safety.