OK, after more testing, there's good & bad news. I unplugged the new TP to try it in the other outlet in the same room, but I didn't switch the power off. When I plugged it into the other outlet, not...

I have been using a pair of these units for quite a while without issue, to get internet in my studio from the router in my lounge. I bought another to add a NAS in the den, but am having issues with...