Hardwired Sky Q mini not providing WiFi signal

[MattJK123]

Ok so I have a 2TB Sky Q box hardwired to a Sky router on Sky Superfast Broadband.. I have 3 Sky Q mini boxes, 2 of which are in the house connected via WiFi and one at the bottom of the garden in an office that is hardwired to the router. This setup used to be fantastic. All of a sudden however my Sky Q mini in my office that is hardwired to my router won't provide a strong WiFi signal 5mb download 5mb upload. I have swapped each of the boxes and tested them in the garden to no avail. If my main box is hardwired and my Sky Q mini is hardwired, why won't it provide a strong WiFi signal as it used to? Thanks

[Chrisee]

@MattJK123 is the Q mini in your garden office using a direct ethernet cable or is it connected by powerline adapters that use your mains wiring to carry the signal?

If the latter I would suspect the adapters are the issue if the former it is a bit odd. You have eliminated an issue with the Q boxes by swapping them so it is the link itself - can you attach a laptop to the ethernet cable itself and run a spedtest?

If you are using powerline these can fail but unplug them and use a different wall socket to see if that helps the speed. Avoid trailing adapters as they will slow performance. 

[MattJK123]

The Sky Q mini is connected to the router by Ethernet cable that has been buried in ducting in the garden from the house. If I connect my laptop direct to the Ethernet port / cable I get 45mb download and 8mb upload. It is really odd.

one thing I did notice is that when I swapped one of the boxes I got 45mb download but no upload at all. It's very inconsistent.

As I said before it used to work perfectly.

[MattJK123]

Additionally. When the engineer came round he gave me a new Sky Q main box. At this point the Sky q mini in the garden would connect via WiFi and would give me approx 25mb download and 5mb upload which was accepatable. When however we added the other 2 boxes in the house to the WiFi network. The box in the garden would not connect via WiFi and only by Ethernet cable. The internet speed test then returns 5mb download and 5mb upload.

[Chrisee]

@MattJK123 is there anything in the office thst could be causing interference with the wifi? Think as wide as you can but DECT cordless phones,  wireless speakers and wireless alarms can cause this in some circumstances. They dont show up on wifi analyzer apps on mobiles but can cause major issues.

Power down anthing suspect one by one. If you find the culprit then try moving it a few feet as positioning can be critical. It is worth using a wifi analyzer app to check that it isnt a neighbour's network on the same or adjacent channel but I think thst is unlikely.

[MattJK123]

I've tried that I wondered if my wireless keyboard or mouse was having an effect but nothing has worked. I'm not sure it's a neighbours WiFi as WiFi is good everywhere else.

When I rang customer services I ran a network scan and said that the box in my office had a load in it if 500 and it should be about 80 but this went over my head.

It's really frustrating because it used to work so well.