Recently I accidentally dropped my nexus 7 2013 in water.  I pulled it out quickly and took all the precautions.  Powered down, removed backing and dried it inside and out with towels and compressed air.  There wasn't much moisture inside when I popped the back off but I still let it sit overnight before attempting to turn it back on.  I tried powering it back on throughout the next day with no luck.  Finally late in the day just when I was convinced it was fried, I tried one more time and to my surprise it turned on!  After playing with it for a bit the only problem I could find was that when I try to power it down or put it into sleep mode using the power button, instead it turns the volume up!  The only thing I can figure is that because the power button is so close to the up volume button, it's maybe hitting the volume sensor underneath.  I pulled the back off again and took a look but it seems normal.  The weirdest part is that when it goes into sleep mode on its own and I hit the power button to wake, it works fine.  Any thoughts?