On 16/05/2020 11:57, The Natural Philosopher wrote:
On 16/05/2020 10:43, Bazza wrote:
We had a spike yesterday when a submersible pump tripped the main
circuit (RCD) in the consumer unit.

Every thing came back up OK when reset ( including the LL phone)
except the internet connection.
I have tried the following:-

1. Swapped out the ADSL router with a spare.

Can you actually 'web into' the router management interface and see what
it is saying?

Ethernet port failure in either the router or the PC is a possibility
too. Wifi tends not to be so affected. I had one go bad once that would
only work at it lowest 10M link speed after a storm direct hit.

The first thing is to get a PC talking to the router with as little in
between as possible - a straight ethernet cable is best.

Then see what the router is saying.

I've had spikes blow routers partially and router PSUs, both.

I've only really had that happen with a very nearby lightning strike and
only then once out of perhaps a dozen such local surge incidents. Used
to kill filament bulbs with monotonous regularity.

--
Regards,
Martin Brown