Deco P9 - Satellites randomly disconnect and blink red
Having same problem as this thread. Apparently 2 yrs wasn't enough time to fix the issue.
https://community.tp-link.com/us/home/forum/topic/209628
Using the Decos in an old house with thick walls, which is why the powerline mesh hybrid system was purchased.
I've tried the suggestions from this prior thread, including swapping the satellite and main units. Any of the units works fine as the main, and none of them work consistently as a satellite.
I've also tried moving the satellites closer to the main. However, moving the satellites "slightly closer" has no effect through the thick walls. The only way they work with wifi connection is to be in the same large living room. Since the main unit works fine in that room by itself it defeats the purpose of the satellite units.
When the satellites are initially plugged in to their remote locations they work for a short time. The light occasionally turns white and the unit then allows internet hookup at close to the same speed seen on the main unit. With the distance and lack of wifi coverage due to thick walls this shows the powerline feature is able to support the bandwidth needed.
Unfortunately after a short time the satellite units flash red and the only way to recover is to move them near the main unit, wait for them to resync, move them back, try to use them quickly, and hope they work.
Hardly a useful scenario.
The thing that surprises me is that the powerline function can't stay synced for more than a short time. And more importantly when they lose sync why they can't regain it through the powerline. Seems hard to believe considering when they work they support high-speed operation, which shows the signals can traverse the home power infrastructure.
This seems like an issue with the syncing and resyncing of the units using the powerline system with no support from wifi. After years of the same complaints (judging by the referenced topic) you would think a company like tp-link, which theoretically specializes in these types of products, could figure out how to build a product that actually works.
Any suggestions on settings that might help the satellites be more able to resync based on the powerline network would be appreciated.