That could still be caused by a lack of power to the board. Again, since you haven't provided much detail, I can only assume that you've checked basic things like tripped circuits, bad PSUs, etc.
If you're really desperate to get it going, and don't mind voiding your warranty, you can open it up and connect directly to the two boards with a PC. I've never done this, so proceed at your own risk. I'd only recommend this if you have quite a bit of time on your hands.
I'd rather not void the warranty. I'll give you all the details instead.
It was running fine, 24/7 for the past 12 days (since I got it). I've been mining on Ghash.io. This morning Ghash.io went down for about 20 minutes. It kicked to my failover, BTCguild. It mined for about 5 minutes and then stopped. When I checked on the TM, the lights on the front were off, but the fans still on (low speed). Neither breaker was tripped. I unplug it and plug it back in, again the fans came on, but the lights on the front did not. It's not showing up on the DHCP, in fact it's not getting internet at all. The LED on the router is not coming on for that ethernet cord (I tried different ethernet cords and different plugs). I tried using the reset button on the front, short press, and long hold... no lights came on, nothing changed.
