Had a heck of a job getting the router going. All reported connected etc., but nothing on all three. One hard wired.
Suddenly trying to get Headlines, it offers a last menu. Sign in with old password. I did this, and it gave me a big tick/check, and told me I was set to go.
It's now faster than it's ever been. So long fluffing around with an old router, just can't see how it kicked back into life after the local guru lent me a 10M wire. It was fine for a time. But then, that's the nature of electronics fault-finding, so I should have thought it through a bit better.
Thanks jimjim1 for making me look past my desk.