Entire 5Ghz band disappeared, and is no longer functional on Archer AXE75
Last night, while playing music on three Amazon Echo's for music across my apartment, my whole network dropped out and stopped working. I simply tried to skip a song, and it skipped on one device, and dropped the other two, and a few minutes later, every single device on the 5Ghz band dropped out entirely. I have not been able to get a single device to connect back to it since. Here are the steps I took to troubleshoot:
-running the "diagnose" function on the Tether app. Got a message saying "Great! Your network is online." But since I'm connected to the working band, that was kind of a given.
-rebooted router and modem (including unplugging, waiting a couple minutes, and plugging back in).
-updated firmware (updated to current version).
-factory reset on the router.
At this point, after turning Smart Connect off again, the 5Ghz band stopped showing up on any device. After that, I:
-re-enabled and disabled Smart Connect again.
-enabled, tried to use, and disabled MU-MIMO.
-manually set the channel. 52 made the network discoverable on my iPhone 14 Pro Max, but not on any other devices, and it didn't give me internet access anyway.
-tried other recommended channels. None of them work.
-set the channel to "auto" again.
-changed security type. Eventually changed it back to WPA2-PSK.
-tried connecting to the 6G band, which has never worked for me (I know the device needs the capability, but I don't think any of my devices support it).
It's also worth noting that even upon connecting to the 2.4Ghz band, I still had trouble connecting to the internet on my PC, despite my Tether app telling me that everything was okay. I feel like this has all been caused by the Amazon Echo's, as it was the first time I'd used them in a long time (probably since buying this router) and also came right after they all bugged out. I've spent probably a collective five hours researching and trying to find a fix, but none of them work.
Unfortunately, the most likely answer seems to be that something broke internally, and that I would have to buy a new router. If it's important, I'm connected to a Cox Panoramic Wifi modem/router in bridge mode, as it doesn't have the range or reliability that I need in a router.
Hello @Ethan97 ,
Welcome to our community.
If you remove all Amazon Echo, can you detect the 5Ghz?
Have you reset the router as below: Press and hold the button for about 6 seconds until the Power LED blinks to reset the router to its factory default settings.
After reconfiguration, are all the lights back on?
Please enable the guest network for comparison and check whether you can detect the 5GHz band.
If the network still doesn't work, it is recommended that you contact local support for further help.
