Hello Daniel
Let me tell you how repairing and fond of repairing things, that rice as a tool to solve electronic devices is just as effective as not doing anything, I think worse, since drying the water will generate more rust.
If the terminal gets wet, the only option is to clean the entire motherboard. Use this guide to learn and follow the instructions to clean it correctly.
This is the first and most important step to repair liquid damage.
If it's late we can not know, it's bad, but it's luck and the rust is not very advanced.
luck!
Water Damage
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