GPS got a bit of moisture in it. I first started having issues with it randomally turning off while running on battery power. I thought it had something to do with the batteries being loose so I tried adding a bit of paper to hold them in but still had the same issue. Then a day or so later I had moisture show up on the screen. I knew then I had a problem. I let it sit out in the sun but it didn't seem to draw the water out. Here was my next great idea, bury it in rice. I have heard this a few times from people with cell phones so I thought I would give it a try.
So the final results after letting it sit for 48 hours were great. There was no more moisture in the screen and it got rid of the issue of the random turn offs.