I purchased an OBI110 device yesterday and attempted to set it up. When I plugged it in the first time, it powered on as it was suppose to and I was able to setup my handset. Several hours later, however, it is not turning on despite being plugged in and I can no longer setup my handset. I've checked that the power cable is all the way plugged into the back as well as tried the device on different sockets. I am certain I have not used an incorrect power cable. Any advice?