It is extremely interesting that you mention the cable TV. I was listening to the system at night and everything was fine. The next morning our cable repair tech came to investigate a pixilation problem. He fixed it by installing some sort of signal amplifier. I was not home while he did that. Later when I turned the system on, I hd the hum. Since the cable guy never touched my system I did not want to jump at the idea that what he did caused the problem.

The cable signal does go through the 1050 though.

Is there a filter that can get rid of the noise?