[Zubersoft]

That's very strange - I'm assuming you have Settings->Other Settings->Keep Screen On set to "While Viewing Scores" or "Always", correct? Can you tell if the tablet is going to sleep versus an issue with the display? How often are you seeing the issue? Have you ever seen the issue outside MobileSheets? It may be worth running some basic tests with other kinds of content (watch a video, browse the web) and see if the tablet ever does the same thing. If so, I would say that you might need to send it back if it's still under warranty. Let me know if factory resetting the tablet fixes the issue.

Mike