Quote:
Originally posted by Hullguy:
All the grounds in your house wiring end on the same bus bar in your panel! The adaptors or "cheaters" have a green loop on them where you are supposed to screw the plate cover screw to ground them for a correct installation. If you kill the circuit you can pull the outlet out of the box and verify the ground wire is still connected. The other thig is to go into the electrical panel and carefully check and make sure the ground connections are tight. The panel ground is supposed to be wired to the water pipe, in older installations, and in newer installations the water pipe and a ground rod. Jim
So are you saying you think the buzz/hum might be because the ground on the outlet in the ceiling for the projector no longer has the ground wire connected, or that maybe even the panel in the fuse box for the circuit has the ground disconnected? I thought it was typical for people to have these problems when audio/video devices were connected via video/audio cables, and their power connections were not on the same circuit. If all the grounds are connected and all the circuits of the fuse box are connected to the same ground, is the problem still a "ground loop", or more because of using different wires to get to ground.