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Garage door opener sensors

Posted by Chautauqua49 none (My Page) on
Fri, Dec 9, 11 at 9:34

We have a Craftsman door opener that won't close unless you hold the switch. There was no light from the sensors, so I replaced them. I got a light from one sensor only briefly, and then it went dark. They won't work. I double checked wire connections, but no luck.
Any suggestions from anyone?
Thanks very much.


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RE: Garage door opener sensors

If when closing the door it reverses to the open position and the main light flashes 10 times it is a door sensor problem. Make sure the small light on each sensor is on and not flickering ever so slightly. (check closely) Tweak them a little even though they may seem to be okay. Check for 5vdc between terminals 2 and 3 on the rear of the motor unit. If there is no voltage or if it is greater than 6vdc the logic board is bad.


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