This is an old topic. I got the message on mg BT7610 - Oct 2025.
Comments seemed helpful and I bought a replacement base unit off eBay for £7 + £3 postage.
It turned out that my base unit was not the problem. Fortunately the sellers had incuded a (tested) transformer/power unit, because that turned out to be my problem.
Replacing the transformer solved the problem.
Hi @Keith2.
Thanks for coming to the community and for letting us know this worked for you.
It’s really helpful to hear how you solved the issue.
Debbie