Just for kicks. I just worked on a Runco Projector today that would not turn on. We go over to the projector it does not power on. Turns out that an extension cord w/o a ground was run 15 feet through the ceiling, then hooked up to an outlet. This was in a very expensive home theater put in by a very prominent company in the Cincinnati area. This is terrible. We do not do this type of work.
I am a professional. I understand that when you have a ground loop problem, to correct this problem 100% you should ground the display device to the same ground as the equipment. what customer is going to pay the time to run a new ground? No customers that I have. I have had great success with the leviton and will continue working with it.