sometimes it takes a while for the light to come on or I change cables or even turn it on and off again? I would like it work every time consistently. Most of the time you plug the cat 5 in and get a Immediate yellow light on rear but sometimes its just black and does not do a thing, this happens at shows and at home. I have 3 routers and 5 cables. I take 2 routers and 3 cables to the gig just in case. But it worries me that something may be wrong with the unit. Has Anyone else experienced this?