Ok so after dealing with this, I went out and got some electrical contact cleaner, I sprayed it on a q-tip and ran it over the button a few times while running my finger across the entire button. I repeated this a few times. With the power off, I must have pushed the down button a few hundred times, the diwn button is clicks but the up side is kinda mushy. Leading me to believe there is gunk non there or maybe just a ....ty design. Either way, cleaning it and setting the screen timer to its minimal setting seemed to resolve the issue. I think it has happened one time now over the course of two days, hope it helps