Yes, if you are using power strips, which I'm sure you are, make sure to unplug everything and test to make sure it isnt the strip itself, then start plugging things in. Also, don't forget to unplug your lights. I was reading another thread about a guy chasing stray voltage. He checked everything, almost went crazy because he couldnt find it, then realized his lights were plugged in to allow him to see better. That was where his problem was.