When technological disaster strikes, as is its wont, I go to the oracle. Not the oracle at Delphi. The oracle at Mountain View. Google.
Recently, when my cell got wet (rain), it stopped working entirely. I consulted the oracle and found that the treacherous manufacturers will not honor the warranty if your device has been exposed to moisture. They have even installed a doohickey that shows such exposure, so don't play innocent ("but it never rains or snows in Boston!")
In despair, I perused the Web for solutions. Ever attuned to food, I chose the rice fix. Take battery out, lid off, cover with rice in a bowl. I put the bowl on a radiator overnight. I also used risotto rice, which absorbs more humidity than long-grain. To be precise, I used vialone nano, the most absorbent risotto rice. Worked like a charm.