Powerlines not working in just 1 room
Ok first of all I have multiple AV500 / 2 x AV600 / 1 x Archer AX50
I have had AV500's working for a few years in all rooms in my house. Recently the powerlines in my youngest son's room stopped working (AV500) followed by the AV600 in my bedroom. I tried switching to new ethernet cables, new powerlines/extender, resetting, reconnecting and multiple different sockets. I have got the one in my bedroom re-connected (all tests done in my sons room). I can pair 2 devices downstairs but as soon as I plug it in, in my son's room the connection to the downstairs powerline (2nd light down from top) blinks. The connection speed is anywhere between 300kbps - 600kbps (not a typo). I have tried 4 different mains sockets and an extension lead all in my son's room. I have an AV600 plugged in and fully connected to my hall socket which is, max, 5 meters away.
The only issue I can't rule out without a sparky coming is the sockets in his room but bare in mind this is 2 double sockets and a single socket on different walls, none work.
Halppp please :)