Randomly Powering Off - Not sure of cause

I've been using this particular 3TB Time Capsule to host my wireless network as well as a good deal of content for access from different computers (date of purchase Early 2013 - Apple Store). Recently, it seems to randomly power off without warning. It doesn't happen more than once a week, and afterward a simple power cycle gets everything up and running again.

I was doing some research and it seems like older models have had problems with the power supply - but nothing seems to current. Any help would be greatly appreciated.