The reason I'm asking is because the regulators go to grd. If you pull the grd will the regulators work like they are suppose to? If we pull the IEC grd where is every thing getting its grd? The case no because we pulled that grd. So where is everything getting the grd after it is removed. Aren't the regulators using the grd as a reference? I'm just thinking out load here. Laugh if you want. I'm just not to happy about pulling the grd. Usually you will get the hum if you don't have a good grd.