out of the box it worked perfect, but about 24 hrs later it messing up. It has a weak light on the tip and weak heat up and sometimes no light at all and no heat up. The atty's are good, and if I move it to another ubs port on two other computers, it does the same thing. It's making a good connection to the atty....it acts like a dead battery but I was told there is no battery in it....it's not full of juice, ......I think something may have "let go" on the inside. dunno???? any Ideas?