Is this corrosion?

[Whiteskyhd]

Last year I spilled coffee on my 2015 MacBook Air laptop, I drained it out, and to my surprise it still worked, then last week it just randomly crashed and would not come back on, I was not doing anything intensive (reading a book) I've tried replacing the charger and battery with no luck. I took he logic board out and there is no immediate evidence of a spillage apart from this, which is what I assume to be the coffee, it is very small and hard to see, but I know how tempermental computer components can be.

Is this corrosion, and if so what would be the best way to clean it

 

[k1114]

I'm not sure what you are referring to. Maybe the black dot on the solder point? There's no sign of anything in the entire pic. If coffee had gone on there, it wouldn't be completely clean like that.

 

[Whiteskyhd]

I'm not sure what you are referring to. Maybe the black dot on the solder point? There's no sign of anything in the entire pic. If coffee had gone on there, it wouldn't be completely clean like that.

thats what I was thinking, still thought it would be better to ask, it's strange, I don't really know what could have caused it to just die