Wires broken to sensors

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  #1  
Old 11-20-15, 11:34 AM
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Wires broken to sensors

Visiting Daughter and wires broken to both door sensors. Reconnected them and door will only close when you hold button all thee way down. If release button anyplace on down side it will go back up.
Chamberland 41a5483-4c Hold button till closed it will stay closed. Don't know how wires got broken but after first one broke son&law pulled other wires.!!!!!
Don
Is there any visible light from sensor? There is 6 volts to sensor and there no light at sensor, Found instructions for door and said lights should be there.
 
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Old 11-20-15, 11:51 AM
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You usually can't actually see the light beam that goes between sensors, but there are usually led indicators on the side of the sensors that light up to tell you status of the sensors.

Proper polarity is important, are you sure you got the polarity correct when you spliced them?

Having to hold the button to close definitely indicates a sensor problem.
 
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Old 11-20-15, 06:12 PM
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LED on neither sensor light up. Have checked wires to sensors and are wired right. Will not be back to check until later next week.
 
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Old 11-20-15, 09:40 PM
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Interesting video.... he illustrates the safety sensors and exactly how they work. They modulate a pulse on the power supply line. Pretty ingenious to eliminate bypassing the sensors.

The voltage you found of 6vdc is normal. That would leave defective sensors.

you tube/watch?v=GbmufXgpl14
 
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Old 11-21-15, 06:42 AM
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Good video, Thanks Pete
 
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Old 12-08-15, 03:11 PM
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Forgot to update this. Called Chamberlain and they thought board was bad but had me unplug unit; Repaired wires and plugged in, Lights came on in sensors and door works fine. Just repairing wires without unplugging door opener did not work.
 
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Old 12-08-15, 05:33 PM
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That's good information to know. Thanks pugsi.
 
 

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