Genie mini C61W-700 won’t stay on

I have wireless Genie mini C61W-700’s connected to two bedroom TVs, along with the main system on a TV in the den.  After being unable to find a signal on the bedroom TVs for a couple days, I did some research and reset the Video Bridge on the main system.  That immediately fixed the problem on one of the bedroom TVs, but not the other.

As I attempt to figure out why the other TV won’t work, I determined that the mini C61 won’t even turn on using the Directv remote. It turns the TV on/off, but not the C61.

I press the red reset button, which turns the mini on, but not for long. A message appears on the screen — something like “this may take a minute” — then the red light slowly blinks twice, followed by the green light for maybe one second, then the box turns off.

Any ideas on what’s going on?  Thanks!!