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Old 03-15-09, 06:00 PM   #1
NeroG
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Vintage buzzer help

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Old 03-15-09, 06:06 PM   #2
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I've never seen one of those, but I would suspect that the casing is the negative path and the circuit is completed when you press the button ?

It sounds like the button forces a flat spring (cantilever spring) to make contact with the buzzer housing.

I'd guess your's didn't quite clear the housing when you closed it and needed tweaking.

Close the back and try pressing both buttons at once.
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Old 03-15-09, 06:15 PM   #3
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Old 03-15-09, 06:18 PM   #4
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Old 03-15-09, 07:04 PM   #5
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Have you got a multimeter ?
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Old 03-15-09, 07:40 PM   #6
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Old 03-15-09, 08:05 PM   #7
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Do you know how to do a continuity test ?
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Old 03-15-09, 08:21 PM   #8
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Set the multimeter so it is on 'continuity' - it will buzz when you touch the probes together.

Take the battery out of the 'vintage buzzer'.

Test for continuity between both 1/2 of the inside of the case.

Check for continuity between the inside of the 1/2 with the button to the cantilever spring (strip of metal riveted at one end).

Check for continuity between the coil spring and the inside of the case.

Finally check for continuity between the coil spring and the cantilever spring.

It's hard to see how it's put together from the pictures, is the buzzer part plastic mounted to isolate it from the case ?

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