Question about Chamberlain Powerdrive PD422D 1/2 HP Security Plus Screw Drive Garage Door Opener

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Door will only close when held down

Got the Chamberlain Professional garage door opener model 41BD002-2 & have to hold down button to close it until it goes all the way down. Tried moving sensor with orange light & it still won't change. Any other suggestions? Reinstalled opener at a new location- was working perfect b4. Now that I have reinstalled the problem is:

when I push the opener it very briefly attempts to close and then stops and makes 4 to 5 clicking noises and then stops. If I hold down the button it will close smoothly until I let go of the button and then it opens all of the way again and makes the same 4 to 5 clicking noises. Even if I hold it down until it closes all the way it wont stay down - it opens back up.

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  • doclamanna Sep 08, 2008

    I   have the same problem. exactly. 
    Chamberlain1/2 hp residential opener

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The problem is in the sensors at the bottom of the tracks. They both should have lights on them one orange, sending, and green, receiving. In almost all cases theres an indicator on each side to let you know that sensors are positively aligned. Check wiring.
The only other problem I have seen is if the opener has gotten damaged by a power surge or lightning. The safety sensor part of the computer board on the back can get damaged, and maybe a sensor or two but, everything else works ok.

Posted on Sep 02, 2008

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Sounds like the gear drive is getting worn.
also make sure the track are free of any debris.

Posted on Aug 17, 2008

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Door will only close when held down


That normally happens when the sensors aren't aligned. Both sensors have led lights on them the yellow/orange one will stay on all the time the green one will go out if it cant see the other sensor. Possibly theres a wire that's broken or the other sensor is really out of alignment. Check every inch of wiring from the sensor to the opener, remove wire nuts if present and check the connections. The wires that are used are small, solid and can break easily. Also see if there's a staple that's too tight, move the wire abit where it's stapled and look for damage.

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if you obstruct the photo eye does the light flash ?

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