Thanks for your replies and help.
I did think that it should not be there but this house was built by subcontractors who bid for the work............back in the day.
I will do what has been suggested, this was down the same line as I was thinking and leave the old unit in situ and fit...
Hi
I am new to the group but need some help.
I have a mains powered doorbell and the transformer appears to have become faulty.
I have located the transformer but it is at the back of the fuse box (I hope to attach some pictures)
If someone can give me an idea on how...