A couple of weeks ago my Deco network was working fine and had been rock solid for 3 years. An outage of 36 hours from our broadband provider occurred and now one of my Deco P9 nodes keeps losing the powerline connection resulting in my home office losing internet connectivity. Timing may be a coincidence.  As a home worker this is driving me nuts. 

Connection from the main node is good so it is not the broadband connection and definitely seems linked to losing the powerline backhaul from the upstairs node.  It defaults to WiFi to connect to the main node and this always concides with the issue. 

Any thoughts on what this could be or what to try next? 

Do the later models have more reliable powerline in an older poperty if I were to upgrade?

thanks