My surround sound keeps on having a rather loud humming noise, and I don't know how to fix it. I have unplugged everything, and tried to plug it into another mains power socket to see if that was the problem. Someone please help me!
It does have a subwoofer, and I have to have it plugged into the mains power because that power gets passed onto the decoder. I personally think it needs earthing, so I'm going to drill through it and put some copper wires around the power section, and wrap the other end around the radiator.