JR> create this type of buzzing sound). I have also tried removing the
JR> fuses one at a time (that is, removing one, listening for the noise,
JR> then putting the fuse back in and removing the next fuse), and oddly
JR> enough I have noticed that removing a particular fuse reduces the
JR> sound by about 75% but doesn't get rid of it completely. Only
JR> shutting down the whole power eliminates the buzzing 100%.
I'd also vote for a transformer (doorbell, furnace/air conditioning,
telephone [the old grey block ones for the Princess telephones], etc.)
but of course the puzzler is why doesn't the sound completely die when
the fuse is removed? My guess is a wire powered by another circuit is
running right next to the transformer and possibly interacting
(magnetic lines of flux) so when the power to the transformer's
primary is cut you get the 75% reduction. Or maybe there are _two_
transformers causing the problem, on two different circuits. Or maybe
the transformer and a clock.
I don't think the problem is one other than an acoustic nuisance.
(OTOH if there is a problem I disclaim responsibility as I dont' have
sufficient information.) The problem is probably being caused by a
slight vibration of the plates making up the transformer's core. Can
sometimes be tightened with the assembly bolts or squeezing with a
cable tie. Physically isolating may reduce ==> if the transformer is
mounted to a rafter this may act as a sound board. Try suspending the
transformer (and not by the primary and secondary wires! <g>).
Another possibility is the power transformer in electronic equipment
such as a TV -- vibrates trough the floor but seems like you'd hear it
in the room.
JR> Is it possible for old electrical wires to make this buzzing sound?
JR> Or would it come from something else (ex: a light fixture that has a
Fluorescent maybe; I think incandescents would whine (vaguely recall
JR> bad ground). I'm not sure how to go about fixing this problem. But
JR> like I said I can isolate it to something within the kitchen floor (or
JR> within the basement ceiling) itself.
Ah! Kitchen floor! The (mechanical) clock in the stove? Try
unplugging (be especially careful if electric -- probably safer to
pull the fuses). Unplug refrigerator, microwave. Unplug anything
that's "instant on" ==> remote control devices are partially on all
the time to see if you're pressing the power button on the remote.
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