Apple’s Time Capsule is a wireless router with built-in hard drive for automatic backup of devices on the network. The first generation was released in 2008, and within a couple years became notorious for mysterious power supply failures that left the devices as $300+ bricks. The failures were quite similar in that the device would lose power suddenly and be unable to start back up. The reason for these failures, the more I read about them, only becomes more and more silly.
Apple Time Capsule 1st Gen. (2008) Repair Introduction