How does the Leviton 4823 compare? I've checked both fuses on the front of the unit, is there an internal one? At this point I have no lights. In the past when it failed it would lock up and the red transmit light would stay on. If I powered it off the red light went out but as soon as I sent a signal it would lock up, and if I recall correctly none of the X 10 stuff would work since it was transmitting garbage.