My setup at home has developed a bit of a problem. I have a 36" HD CRT which, as with all CRTs, is highly sensitive to magnetic interference. I've discovered that my new Onkyo amp creates quite a strong magnetic field and is causing the picture to distort when viewing high definition content. I've moved the reciever as far from my TV as possible given my current setup and whilst much improved, it still affects my set slightly. Would anyone have any suggestions as to how I could shield my set from my reciever?