I was told by my cable company that I have "voltage" in my cable lines. One or more of the TVs in my home are not grounded properly and volts are ecaping my TV through the cable. This is causing interference in my TV reception and Internet (and who knows what else).
I have a home built in the 30s and I do not have a ground wire at this recepical. Will the GFCI help prevent this problem? Can I groung the outlet to a cold water line?