On Sun, 14 Jul 2019 16:35:06 +0100, ARW wrote:

FFS just let the OP buy a new door bell (not just to you but also to the
other posters). It's a ****ed 40 years old door bell.

Maybe but it's real proper doorbell with lumps of resonant metal to
go Bing Bong not some nasty electronicaly generated noise.

--
Cheers
Dave.