broken gb-4000

Hi all

My rife machine stopped working a few days ago unfortunately. It looks like I can push some of the digits down, about half of them, but the other ones don´t respond to pressure. Does anyone know what has happened with the machine? I bought it used so don´t think I can turn to emr labs for a question. I have only used the machine about 3 months now, and the guy I bought it from never used it, since he found other ways to cure himself from lyme. It has not been shaken or dropped or anything. I thought this machine was "built to last a long time".