Today I have on the table an ImpulseRC
Mr.Steele PDB witch had an encounter with the sea.
If you did not know it by now by now, salt water can be dangerous to electronics. This is due to the NaCI (Sodium chloride) creating a chemical bond with many surfaces. These bonds happen immediately upon wetting, resulting in a salt residue remaining long after the water is gone. Just one second of salt water exposure can have the same effects as all day saltwater exposure. The corrosion process continues until the salt residue is exhausted or the corroded surface is consumed. This process is extremely amplified if the electronics are energized in the moment of contact and the corrosion happens mostly where the positive of one power supply is(lipo,5v, etc.)
So the first thing to do is clean the board of any residues and replace affected parts.
Hope this video was helpful,
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Livyu