intermittent internet dropouts RBK50

Hi Thanks for the response.

i've answered a numbe rof the points below, but the issue is not a wireless issue the disconnect log is from a hard wired machine direct into the Orbi.  I've been looking at the logs but not much in there and as its intermittant its difficult to capture the point of disconnect. (only after).

ideally I'd like to get the equivalent of a windows sysem log output to see whats happening at the point of failure.  from what is happening it seems more like the WAN interface is resetting but like i said without being able to look at log files at the point of failure its impossible to tell.

I'm going to fire up an external machine an run a test the opposite way to see if that helps with the investigation as I have a static IP from my ISP.

What is the Mfr and model# of the ISP modem the NG router is connected too?

Vodafone ISP Modem - Technicolor TC440VDF HW Ver 3.6.0

This happening with wireless and wire connected devices? 

Affects only the internet connection wireless internal device connection works

Try a factory reset on the RBR and setup from scratch. 

-Done this previously

What is the size of your home? Sq Ft? -

What is the distance between the router and satellite(s)? 30 feet is recommended in between them to begin with depending upon building materials when wirelessly connected. - approx 25ft on different floors

What channels are you using? Auto? Try setting manual channel 1, 6 or 11 on 2.4Ghz and any unused channel on 5Ghz.
Any Wifi Neighbors near by? If so, how many?

a couple but as mentioned not really a wireless issue

Try enabling Beamforming and MIMO(MIMO may or maynot be needed) and WMM. Under Advanced Tab/Advanced Settings/Wireless Settings

Try disabling the following and see:
Daisy Chain, Fast Roaming, IPv6 and Set 20/40Mhz Coexistence to 40Mhz only. Save settings and reboot the router and satellite(s).