October 17, 2012 at 8:48 pm #20960
Hmm. Likely a hardware issue, then.
Check the EBB to see if there are any signs of damage. Try a different USB cable if you have one. Check the power supply to see if there’s any damage to its plug. See if you can make the problem worse (or better) by holding the USB cable one way or another, and the same with the power supply.