I’m having a persistent stability issue with one of my Deco X50 units. I have two Deco X50s, both on the same latest firmware and hardware version.

For clarity, I’ll refer to them as:

Deco A (problematic unit)

Deco B (stable unit)

Issue summary

Deco A repeatedly turns red and restarts itself after some time. This happens in both Router mode and Access Point mode, and it continues even when Deco A has no Ethernet cable connected.

Tested Deco A as the main unit (Router mode and AP mode):

It worked fine for several weeks in AP mode. Then I got bridging network errors, then switched to router mode. It worked fine for few weeks with no issues. Then after a while following started to happen.

After running for a while, Deco A turns red and reboots on its own.

I attempted troubleshooting steps such as removing the second Deco from the network.

The reboot behavior still occurs, even with no Ethernet cable connected.

Swapped the main unit to Deco B (Router mode):

With Deco B as the main unit and Deco A removed, the system is stable.

Added Deco A back as the second unit:

After a while Deco A is added (wireless), it again goes red and restarts repeatedly.

Deco B remains stable throughout.

Tried different physical/network setups for Deco A:

Connected Deco A via Ethernet cable directly from Deco B .

Moved Deco A very close to Deco B to rule out weak signal.

Rebooted units / re-added the node.

Result is the same: Deco A goes red and restarts regardless of setup.
I couldnt find anything related at the logs. What should I look for at the logs? I can share them if it helps.