Buzzing sound in newly finished basement
There is low, persistent buzzing in one area of the basement. It is newly drywalled (walls and ceiling). We flipped every switch in the new basement circuit box and it did not stop. We started to flip switches in the main box in the garage and the sound stopped when the circuit with the doorbell on it was flipped.
I have a bad feeling that the doorbell transformer is hidden in the basement ceiling (drywalled). Problem is -- I don't know where, only the room where the sound is heard. My best guess is somewhere at the bottom of the stairs because this is directly below the doorbell in the upstairs hallway.
The sound started the same day I used the doorbell -- I rang it repeatedly (3 times) trying to scare my cat upstairs since some workers had arrived.
Our contractor insists he never saw the transformer down there but he was not the only worker. If he had, he would have put an access panel there like he did for the water shut-off valves.
If we have to put a hole in the drywall so be it but the problem is where to do it?????
Does this definately mean the transformer is bad??