I had a power bank sitting next to a tap, and my friend asked me to get it away from water, as the water could enter the power bank and potentially “burn” the insides of it. This got me into thinking how does water ruin circuits when the machine is not running at that moment.
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Tapwater and rainwater have impurities. These impurities can conduct electricity in places where it shouldn’t be going, which could directly kill a chip or other component.
Also, impure water can act as an “electrolyte” and cause “galvanic corrosion”. Basically, it can cause metals on the circuit board to rust or corrode. And then, this corrosion can also conduct electricity in places where it shouldn’t be going.
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