Shame you missed the light show from the beginning so you could be sure if its all lights or just 2 that go out. When I think about it I would guess the internet and voice would be the last to go green but thats purely a guess. If you can't be there to see it happen then I would suggest getting access to the user interface and look at the security logs.

Managed to access the security logs. Have pasted below the detail when the internet connection was lost at 1.46pm. Would be grateful if anyone could help me understand what is happening.

2023-01-13 13:45:58 syslog: ptm0.1 - WAN link DOWN.
2023-01-13 13:45:58 syslog: DHCP lease invalid(WANoE). Connection DOWN.
2023-01-13 13:46:00 syslog: Clear IP addresses. IP connection DOWN.
2023-01-13 13:46:01 syslog: Voice IP Connection Down
2023-01-13 13:46:01 syslog: [87481.047000] Line 0: xDSL link down
2023-01-13 13:46:03 syslog: sky dhcpc client (v0.0.1) started
2023-01-13 13:46:04 syslog: Voice Disconnected
2023-01-13 13:46:50 syslog: [87507.063000] Line 0: xDSL G.994 training
2023-01-13 13:46:50 syslog: [87521.063000] Line 0: VDSL G.993 started
2023-01-13 13:46:50 syslog: [87532.063000] Line 0: VDSL G.993 channel analysis
2023-01-13 13:46:50 syslog: [87533.541000] Line 0: VDSL2 link up, Bearer 0, us=9353, ds=44092
2023-01-13 13:46:50 syslog: [87533.541000] Line 0: VDSL2 link up, Bearer 1, us=0, ds=0
2023-01-13 13:46:52 syslog: sky dhcpc client (v0.0.1) started
2023-01-13 13:47:24 syslog: ptm0.1 - WAN link UP.
2023-01-13 13:47:24 syslog: Received valid DHCP lease from server. Connection UP.
2023-01-13 13:47:24 syslog: Connection Up. SNO/MAC/IP/SWVER/IPv6: [D210223B022192/00A3883C4A20/94.14.40.45/7.02.0203.R/2a02:c7f:9e22:e00::1]

Your broadband connection coming into your property is going down, not the power to the router.

The snippet shows the connection to the Openreach network being reset/re-established. The question is why everyday around the same time, I can't believe the Sky engineer didn't check these logs. If power had been lost you would have had several rows start with '1970-01-01' before the router sends out a 'Send out NTP request' to get the current time. This issue needs to be given back to Sky, you may have something locally that is kicking in around that time and is interfering with the incoming broadband circuit.

Edited by deleted (Fri 13-Jan-23 21:52:12)

Many thanks for your help dect, I will go back to Sky with this information. I have an engineer booked for Tuesday so I will ask him to investigate if anything is coming in which is interfering with broadband coming in.

Just so you know if you log into the user interface again and select the 'Maintenance' tab and scroll down I believe there is an option that says '> Show Statistics' if you click that it should show the routers up time which should also confirm its not been recently rebooted. There should also be an option that says '> Connection Status' and if you click that it should confirm how long your broadband connection has been up.

Edited by deleted (Fri 13-Jan-23 22:13:50)

Thanks have found both of those options.

It finally appears this issue has been resolved so just posting an update in case anyone is in a similar predicament.

1 further Sky engineer and 2 OpenReach engineers did all their tests & could not diagnose any issues with their various tests.

However the last OpenReach engineer used some sort of amplification device in the immediate vicinity of the router & detected a strong disturbance signal around my satellite box (a Televes NevoSwitch device which my router had been sat on top of). The signal was strong even when the power was turned off which really surprised him.

He suggested to move my router away from this device & since doing that I have not had one internet drop in nearly 3 days. So still unaware of what exactly was causing the dropouts but have found a solution.

Thanks again for all help on this one,

This is called random electrical impulse noise (REIN).

Any electrical device can emit REIN, and most do to a small extent, but a device should not be emitting excessive REIN. Is there a power adapter block in use for this device by any chance? A common fault on power adapters is they begin emitting excessive REIN when they still work and generally it indicates a hardware failure somewhere. Have you got an old school radio? Tune it to AM 612 and place its antenna near the device, is there lots of noise? That’s typically around the frequency that causes broadband to drop, so noise here is bad.

On a more general note routers are best to be away from other electronics especially those which use spectrum eg satellite, other wireless kit etc.

Another common device that causes drops is homeplugs / powerline when they’re in an outlet very close to the hub / the rj11 cable.

When you booked the engineer did you agree too, or was informed of a charge if a fault is found in your home? I’m asking as openreach are likely to bill sky for the work given the fault is not within their network and was outside of their control. Sky may eat the cost or they may pass it on, usually it’s past on when there’s an agreed amount quoted upfront to the customer before the engineer is issued. Commonly they say something such as “you will be charged if the fault is within your home or within your internal wiring, past the master socket. The charge has to be agreed before we can issue an engineer.”

The OpenReach engineers both mentioned REIN as a possible cause but were not REIN qualified. If moving the router did not fix the issue a REIN engineer was the next step.

Yes there is a large 3'' by 3'' power adapter for the satellite box & it was emitting a stronger signal (even when switched off) than the satellite box itself.

Unfortunately I don't have an old school radio to test for noise.

I am aware of the issue with powerlines. We don't require them as the house was built with a panel of ethernet cables running from the garage to every room in the house.

I've been on the phone to Sky several times in the last few weeks & nothing has been mentioned about potential charges.

Been an interesting thread to follow.