I have Alexa setup but the TV will never react when I say "Alexa" whilst holding the microphone button on my smart remote. I have also tried Alexa hands free enabled on my Q80T TV and I can see the remote reacts when I say Alexa (red light comes on) but nothing happens on my TV no matter what I say. I have smartthings enabled so I can control my TV from other devices and this only partially works
The same problem here: Alexa is configured correctly, but she does not react neither by using the microphone button on the remote control nor with a simple "Alexa". The red light at the remote flashes at every sound not only when I say "Alexa"
Sorry that this is not going to be any help for your problem... but just another satisfied customer. Just set-up a brand new 55" Q80T. User interface is AWFUL! Can not change channels. When I use Alexa, the TV confirms back correctly. Eg. I say "go to channel 25".. Alexa says back "Tuning to 25"... but the tv goes to channel 2... or 5... or 255... or does not change at all. When I use the remote to select the channel number and click "Done"... it Never goes to the channel I "type" in. Samsung help desk says it is the remote. Can't be as the feedback from the TV is always correct... but it never goes to the specified channel. Best of luck to all of us.
@propete10: I'm not familiar with the relevant voice wake up commands for Alexa, however I recommend heading to Home > Settings > General > Voice > Amazon Alexa Settings, where you can refer to the available options. I hope this helps.
I had the same problem with my television. Restarting the TV didn't help. However after restarting the TV and removing the batteries from the remote control fix the problem. I believe just removing the batteries from the remote control will fix the problem in the future.