Re: Doorbell Transformer??
Turn everything in the house off except for incandescent lights (so you can see where you're going) late-late-late some night. Listen for a buzzing. If the transformer's really old, it might make a low hum or buzz.
You have to turn everything off, because any motors that might run, as well as any fluorescent lights and rechargeable devices may emit low hums or buzzes and could very likely drown out the doorbell transformer.
The "Senior Member" designation under my name doesn't mean I know a lot, it just means I talk a lot.I've been a DIYer since I was 12 (thanks, Dad!). I have read several books on various home improvement topics. I do not have any current code books I can refer to. I was an apprentice plumber for two years.