On Saturday, 16 May 2020 10:58:07 UTC+1, Robert 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.
2. Swapped out the cable from BT wall socket to router with a spare
3. Swapped out the face plate (with integral filter) to the BT socket with a spare.
4. Tested set up with two different PC's and 2 laptops.

Any suggestions?

May well have effectively done this but disconnect router/modem from BT
socket for 30 mins or more and then retry. This apparently forces some
sort of reset at the exchange end .

Have just unplugged it an will wait and see.