On Sun, 01 Nov 2020 13:48:31 +0000 (GMT), Dave Plowman (News) wrote:

It sometimes buzzes. Very unlikely both sides of the rings have failed -
while everything else on it works OK.

Shouldn't buzz. It doesn't latch on so is bust so has to be replaced,
just do you wanta 2016 or 1990 spec one? B-)

And of course the enquiring mind wants to know what/why it has
failed.

--
Cheers
Dave.