I have several x10 switches that are made for florescent lights. I am having trouble identifying the source of line noise. Close to the two 4 way switch assemblies, is my room with 4 computers, 1 color laser printer and Several florescent ceiling lights plus a wireless setup for pda's. I have panamax surge suppressors on the large appliances: refrigerator, gas oven and range (the ingnitor circuit) and a microwave oven. In this house also is a 1,500 watt inverter that supplies power to the computers. All other circuits are powered by public electric power. At various times, my controllers: an ss13A simply stop working. They fail to activate any of the remote switches. But, after about 30 minutes, everything works!.
Does anybody have suggestions just how I can find the source of line noise? I don't want to buy expensive equipment. Just provide me with a common sense method.