Misternice, Did you connect the jumper cable with the spade on the end and bananna on the other end to the HFX box?, the spade end goes to a componet, unloosen a screw and put the spade end there, the bananna end plugs to the center hole of the HFX box, Do this, then you will exsperience your cable, then it has to burn-in 300 to 400 hours, let me know if you get these instructions done, cheers.