"Days after two amps were replaced in my neighborhood, my neighbor directly across the street advised me that he was now having problems as well as the remainder of the neighbors around him.

A tech came to his home and did what every tech does when they first arrive, they tested the signal where it enters the home. Little did the tech know what the Comcast line was doing for the house. Upon disconnecting the incoming line, every appliance in my neighbors house instantaneously exploded, a crack opened in the ceiling, and the melted insulation on the cable wire was revealed.

Turns out, my neighbors electrical system had no ground wire. The house was using the coax cable as a conduit into the comcast system at the tap. The current then followed the shortest path into his next door neighbors ground wire."