I had this exact same problem 2 weeks after I got my tv. It had to do with voice sensor thingy by the power button on the TV. Mine was being triggered by the low frequency from my subwoofer and and other loud noices. After messing with settings and stuff it finally quit doing it. If you get a flashlight and look under the TV by the power button you can see 2 tiny little microphones and if look to the left of the power button there's a tiny switch that if you slide it it disables the feature. That didn't completely fix my problem though and I ended up turning off voice recognition in the settings , disabling Alexa and unregistering my tv from smart things on my phone. On the flip side, something to keep and eye out for is the day before yesterday I was watching TV and all of a sudden my screen went to neon colors. Yesterday went to turn on the TV and it wouldn't power on. Did the suggested troubleshooting and apparently the power supply has die . I've only had the TV for 2 months. I've got a service call setup but I'm really disappointed because I have been a diehard Samsung products user for years and it seems the quality is going down. I expect better for a $2,000+ TV. This is my 3rd high-end Samsung TV. Never had a single issue with the other 2 tvs but this one has issue . This is not whining but I'm really regretting my purchase and starting to wish I had just gotten the LG OLED CX. Also my experience with Samsung support has not been the best. I wish you luck
... View more
I have a similar problem with my Q90T. My Pioneer receiver has regular ARC but having any audio going from the Earc on the TV going to the regular ARC on my receiver I have periodic audio dropouts for like a second then it comes back on. I can see my receiver losing the audio signal on the receiver display. The speaker icons disappear then reappear. It's really annoying. Turning off Earc on the TV doesn't help the issue. Never had this problem with my KS8000. I definitely think it is an issue with Earc talking to ARC.
... View more