Being somewhat of a 'dinosaur' I have come rather late to DCC and, having acquired two-thirds of a DCC layout, I slowly began acquiring items suitable to run on it and now, after ten months, I've finally reached the point where I am ready to power up the track and commence fine-tuning etc .... well I was until this morning when I connected the EZ Command to the layout and, having pressed function 10, ran a non-chipped loco to test that all was well before attempting DCC operation.  The DC loco ran smoothly but the controller seemed rather noisily unhappy and I took this to be the hum mentioned in the instructions ... unfortunately after I lifted the DC loco off the track prior to placing a DCC chipped loco the EZ Command went blank ... all the lights have gone out and it appears lifeless   How can I revive it ... is it actually dead or is it the 16v AC power pack that I've killed?