I am trying to use an old TalkTalk / Youview (Huawei) box. The strangest thing happens though. As soon as I plug it in to the mains (before I even connect the ethernet cable) the Powerline light on my Extender goes from Green to Red and then off.
I can't figure out why this is happening and how it's interfering. I have tried hard resetting the Youview box and also repairing the TP Link Extenders. As soon as I turn off the plug to the Youview box the Powerline light is restored.
How can this be interfering and how do I fix it?
I have the A3DO extender to the CA8F that is plugged into the router.
Thanks in advance.