Between 6am and 10am on tuesday morning, I've had 4 broadband disconnects, then everything appeared to be fine, nothing annoying or concerning.
But from 4pm the same day, internet started getting really slow, pages took a while to load but still loaded. After that, about 40 minutes later, the internet dropped completely and broadband LED kept flashing orange.
Normally that would mean a new IP was being assigned, but the hub wasn't restarting and the LED was flashing for over 20 minutes.
One thing that I found odd was that the power adapter was rather hot, something that hasn't happened before.
As that felt quite wrong, I decided to risk it and unplug the modem from the mains in case it would become a fire hazard, left it to cool down for half hour, then plugged it back in.
Everything seemed fine and the internet was back, but only for 10 or so minutes.
Entire ordeal was repeated 2 more times, I used those 10 minute windows to run the broadband troubleshooter on BT's website but it couldn't finish due to internet dropping out.
Later on I tried the troubleshooter once again and fortunately it saved the fault report progress so I decided to finish it, but ultimately was given an error page along the lines of "something went wrong, please get in touch with us".
I tried it once more but to no avail.
I've checked the faults/outages/damages/repairs page but nothing was happening in my area.
Any quick phone line tests that I was able to complete gave no errors and any extensive/advanced tests would most likely fail the moment my broadband drops out.
As much as I'd love to theorise that this is entirely due to the home hub or its adapter causing overheating, I decided to seek help here, especially if it's something that I can fix myself, rather than spend an hour on the phone with support, which might cost me, since the hub phone will be useless in this scenario.
On top of that, I'm not sure what BT will want to do, but I'm certainly not immediately ready to pay £99 for an engineer visit plus however much it would cost to repair or replace the hub and/or its components, since only cables, exchanges and other BT-owned infrastructure is repaired at no cost to the client. At least as far as I'm aware.
Not sure if it's necessary but here goes, I'll explain at the very end.
Going from top to bottom of your second post:
Quiet line test produces no noise and no audible interference of any kind; not using a socket/filter as this is a cordless hub phone that came with the hub
Not using home hub 4 but found the following:
Downstream 10,076 Kbps Upstream 1,078 Kbps
Noise margin (Down/Up) 4.9 dB / 6.0 dB
DSL checker result:
Now, about what I said at the beginning.
2 minutes after I posted this thread at 5am, the internet died again.
Fair enough, that was predictable. Except then it actually came back without me having to unplug the modem for half hour and plugging it back in again. Broadband then remained active for next 6 hours, then the modem automatically restarted, unlike yesterday, where the broadband LED was flashing orange without the hub doing a full reboot.
Overall this is still odd to me, I never had 4 disconnects in the space of 2.5 hours, nevermind the connection having an impeccable timing and dropping after 10-12 minutes of the hub connecting to the internet.
which hub are you using is it a home hub 2 by any chance ?