How To Clean A Circuit Board That Got Wet. Alternatively, spot clean your circuit board with isopropyl alcohol. This will work well for the internal parts of many gadgets that have circuit boards.
Just hold the can about 3 to 4 inches away from the board and spray the compressed air in short bursts. Use of silica gel desiccants and rice is not advised. If the device has a large amount of voltage stored in its capacitors, discharge the capacitors with a capacitor discharge tool before cleaning.
The above methods will not be effective for removing these contaminants.
The metal parts of the circuit will corrode. This is generally what kills the circuit. How to clean wet contaminants on a printed circuit boards wet contaminants, like soda, grime or oil, can create a sticky film on your printed circuit board that can be a real problem, both on its own and for its ability to attract additional dust and dirt. Use of silica gel desiccants and rice is not advised.