원문 게시자: Tom Chai ,
It’s been in salt water, so you probably want to rinse the board in clean deionized water a couple of times to dissolve salt and corrosion off it, then try alcohol. Salt water with electricity can do extensive damage to electronics. My suspicion is still somewhere inside the board, maybe under the shield or chips. Since it’s been contaminated for a week, i’d say something is permanently corroded, shorted or fried, likely somewhere down battery management.