I purchases a s3400 htib from Amazon. It worked great for a week, then I had a constant light static in the front speakers. I diagnosed with Onkyo support and they informed me the receiver was bad. Amazon immediately sent out a new unit. That worked fine for a week. Now I have an even worse static issue coming from all speakers. I even disconnected all my inputs and the static remains. It appears to go away with the FM tuner. I even ran 14 gauge wire for added protection. Do I just have bad luck to receive two defective receivers in a month, or am I doing something wrong in the setup? I have the receiver plugged into the wall, so no power strip issue. I tried the factory reset (vcr/power button), but still have the static. Any assistance would be greatly appreciated.