Question Unusual Problems with modem and router.

[Omnytrix]

Just need some simple advice.
I currently have a TP-Link Deco X60 system setup in my house. Three Decos, all hardwired with either cat5e or cat6. The internet comes into the house through a cable modem, Arris SB6190, then into the main Deco, then into an unmanaged TP-Link 8 port gigabit switch. From there, it’s distributed to the rest of the 4 jacks around the house, connecting the other 2 Decos with Ethernet back haul. Now the issues:
The main Deco keeps rebooting itself randomly, with no rhyme or reason, and I keep seeing Low Power in the error logs.
The modem is full of No Ranging Response received - T3 time-out errors, at least one every day.
The plug everything is attached to in the basement is also on the same circuit as our two chest freezers, if that could affect it at all.
The problems all started last year in December, been running flawlessly until then.
Whatever advice you have helps!

 

[Ralston18]

What connectivity path(s) are you using?

E.g.,

https://community.tp-link.com/en/home/forum/topic/658418

Sketch out a diagram of your network.

Scan or photography and post the image here via imgur (www.imgur.com).

 

[punkncat]

Have you checked the plug in transformer for the main Deco unit?
Do you happen to have a meter and know how to use it?

The little transformer that plugs into the outlet for this will have its expected output listed. I cannot recall if the Deco (and didn't research yours) is an AC or DC unit for the input, but typically speaking hardware which use DC input power have a fairly wide range they will operate within whereas AC must be pretty close.

 

[BFG-9000]

Note the meter may well show full DC voltage on a DC power brick which doesn't necessarily mean it's good--if it also measures a lot of AC on that DC power brick, then the smoothing capacitors in that power brick are bad

Think of it as like a poor man's oscilloscope for detecting noise/ripple on DC where it only gives an average value for the noise rather than showing you the waveform

Or if all of the Deco units are 12vDC 2A then you could just try moving the power bricks around.

 

[dingo07]

Without investigating the OP's equipment, why not upgrade the switch to a managed POE++ unit and get rid of the power bricks for each AP?