SR203 multiple random reboots

[hopalongChris]

I am having lots of issues with my SR203 router, it is randomly rebooting. This is a new router which Sky had sent me as the old one was doing the same thing.

I am on Ultrafast 1 (160 down, 30 up)
Firmware 7.03.0704.R

The router is on an APC UPS so there should be no power spikes etc.
I have attached a TPlink AX20 acting as an Access Point and disabled the WiFi on the SR203.

All the SR023 should be managing is things like DNS, DHCP, firewall and the phone.

The is normally 15-20 devices of which about 6 are attached via Cat5e / powerline, the rest WiFi.

This reduced the reboots, but they still happen, sometimes multiple times a day, which is a pain as I WfH and require good reliable internet.

Any ideas other than forgetting the landline phone (which we make no outgoing calls and 95% of incoming are scams) and getting a DHCP 61 capable router?

Many thanks in advance.

[hopalongChris]

An update to my post.

I was chatting to my companies PC/Laptop guy, who happens to be ex Sky, and he said that there was a lack of RF shielding over the power supply in the SR203, which can cause issues with a clean power supply to the routers processor, hence the reboots.

The TP-link Access Point was next to the router, so I moved it about 1.5 meters away from the SR203.

Checking the stats this morning, the SR203 has been up for 110 hours, a record and much better the multiple reboots a day I was getting.😀

Problem appears to have been solved.