|IT should be ok, never worry if anything electrical gets wet, aslong as it isnt switched on at the time at contact with water or isnt switched on when still wet then it should be ok. Like the others said, let it dry completely, open up all the casing and take all the motherboards and other hardwares out and leave them out for a good few days.
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Didn't read all of the posts. I shouldn't worry too much, do you think you could take some scans of your broken 040?
To be honest you really should have laft them to dry for alot longer as theres loads of gaps water can get into that are not visable. Leaving them on the radiator is a BIG NONO. Near one maybe, that could have been crucial.