Hi there. starting a thread here as the old thread on this subject is months old and dealt with a previous software/firmware release: i have this issue with an ultra i received during the Holidays. I am up-to-date on software/firmware and am noticing the "chirp" on Netflix and VUDU, but NOT Amazon or other channels (that I've noticed). I am running 4K HDMI out of the Ultra to my new Samsung (UN58MU6070) and then running an optical cable from that Samsung to a brand new Klipsch Sound Bar (R-4B); I had a brief discussion with tech support, but did not get resolution (tho i will attempt to delete Netflix and re-install/restart). I'm a big fan of Roku, but this audio chirp is intolerable when watching movies/shows. So, help?
I am having this problem as well recently with my roku 3, 4200x model. HDMI cord to tv. It's always worked and then the chirp started occasionally but now it's gotten to a chirp at least every 15mins or more often. Help!