My doorbell chime box recently started humming, I purchased a new chime box but the new one is also humming when the wires are connected. I suppose it may be the transformer. Is there anyone out there who can help me out with this.
Usually the transformer is not in the chime box, but somewhere else. Where is the sound coming from?
Sounds like you may have a short in the circuit somewhere. For example a button that is bad will activate the chime all the time and make a humming noise. Try to disconnect the button and see if that fixes it. If it doesn't you probably have a short in the wire somewhare and you may need a professional to find it for you. Mr. Electric