This is a joke post, right?
Who in their right mind would put a perfectly good mobo in a dishwasher and expect it to still function?
Even if it LOOKED dry, the amount of water-damage to the fiber-board, chips, transitors, connections, etc, would be astounding!
Le'me guess...this is a high-school "PC Expert" right? Mr. Somethin Somethin who teaches you guys to like, use Word and type and use Excel, right?