@DWR65 It's not hardware related, I started this post and since installing openwrt firmware on it the issue dissapears and the operation is trouble free.

Since updating the router with OpenWRT 19.07 firmware I have had no further issues, maybe something you could consider Stuart

@Wetterhahn I updated my archer C6 to the beta build the latest version 19 openwrt firmware and I have not further issues with 2.4G, sometimes the 5G can be an issue but it recovers and I haven't...

I can get a working 2.4 WiFi on my C6 Router just by disabling and enabling the 2.4 band in the web interface The 2.4 band networks (main and guest) are visible on a scan of my network with an...

My router is currently in the failed state affecting the 2.4Ghz WiFi band only Wired connections and 5Ghz WiFi are working ok On my iPad I can see both the 2.4 main and guest networks, if I try to...

Wired connection and 5GHz continue to work when the 2.4GHz band stops allowing network (internal and external) access I will follow the supplied instructions the next time it happens I have carried...