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All three inputs are used. I failed to mention the charger is also attached to an input.
The buzzer has no audio even with 12 vdc connected directly across the input(s). I suspect that the piezoelectric crystal is bad. The buzzer is in a sealed housing so checking further for defective componerts - diodes, etc. - is imposible.
Last edited by Duke 7184; 10-23-2006 at 06:07 AM.
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