I purchased three Roku Ultra model 4660X2 in early December, and so far they have been working very well. I have one of these connected through my Pioneer VSX-1131 audio video receiver which supports 4K pass through. Until the past few days, I have been able to power off the TV (Samsung UN60KU6300F), AVR and Roku by using the Roku remote. Now, within 15 seconds of turning all off, ONLY the AVR powers back on. I checked HDMI on the AVR, and have tried all kinds of combinations of CEC on/off, HDMI Standby Through on/auto, ARC on/auto; in Power Management Auto Standby on/off. No combination returns my ability to turn off (completely) the AVR. I can set it to NOT turn off the AVR and the AVR still came back on at power off! I thought perhaps because I had changed to a screensaver that has a lot of news activity that it might have caused the AVR to turn back on, but I changed back to the default screensaver and the behavior at power off remained. Firmware update happened back on December 11th when I installed the Roku units, and no firmware update has occurred since then (verified in settings menu). i even tried turning off CEC on the tv but that had no effect. I really want to continue to pass the signals from Roku, 4K Bluray, HTPC through the AVR. Does anyone have a solution?