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I recently did away with the unattractive HDMI cable. And added a wireless HDMI transmitter and receiver.Now we get a sporadic loud static noise though the Sonos ARC. We can get rid of the noise by turning off the HDMI Transmitted and turning it back on. We would like to find a permeant fix.

Where are you using the HDMI cable?  Between sources and TV or between TV and Sonos Arc?  Regardless of that answer though, I’m not sure why you’d expect Sonos to fix the problem.  It’s clearly a problem with your wireless HDMI setup.