Hi, I just have a problem with my 5 day old sw2, I overstimate the waterprooftness of the device and take it to the pool, everithing was fine but in home I can see a weird spot on the screen in the button side, was small next day the spot get bigger and the retroilumination was gone, I turn the watch off and let it dry for a few days, the spot still remains I turn it on and the retroilumination is back, but I want to clean the screen and clean all the board from water before it can get more damage. The big question, anyone have attempt to open the watch? cant find any guide, dont know if start for the screen with a heat gun or in the back with some sputgers, the watch is still turn off. Please if you have any suggest let me know thanks.
If not will post the first tear down guide
hope with success, or it will be a destroy guide. 
If not will post the first tear down guide