I don't remember this ever happening, but if the switch could oxidize,
I suppose most of the bare wire could oxidize. Not the part that is
not open to the air when the screws were tightened, but it coudl work
out, I suppose, that when you rub the wires together, you won't make
good contact between them. If you have a hard time making the bell
ring, scrape the bare wires with a knife** until a good portion of
them are shiny. YOu should do that anyhow before you attach the new
switch. (If you could shine up the part of the swith that makes
contact, you wouldn't need a new switch either.)
**I have a friend who uses sandpaper to clean wires, but he's not very
good at home repair, despite owning a home for 30 years, so I don't
know whether to recommend that or not.
As posted earlier, our doorbell did not work for years. We made the kids
stand outside in case someone came to the door and they would alert us. No,
we did not make them stay out al the time, they came in to use the bathroom.
They took turns for meals.
I just love when the regulars argue. The threads can get so long.
Shorting the wires is a quick easy test.
Checking the label of the chimes is sound advice.
Please do put us all out of misery by letting us know the cause or we could
be debating this next year at this time.
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