I have this model garage door opener, and there's a small space where I can see inside with a flashlight. There are white shavings all inside. What does this mean?I have this model garage door opener, and there's a small space where I can see inside with a flashlight. There are white shavings all inside. What does this mean?
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Sounds like you have a chain drive garage door opener and you hear a humming sound when you push the wall console. The motor is running but the chain does not move. You need to replace the gear & sprocket assembly.
Is the door stuck in the open position? If so the trolley is probably jammed against the bolt just in front of the motor unit. Loosen the chain enough to free the trolley and then run the opener until the door is closed. While the door is closed locate the 'up limit' on the side of the motor unit and turn this control 2 complete turns in the opposite direction of the arrow printed on the cover. Tighten the chain.
Check to ensure one or more of your garage door springs isn't broken (they last about 10 years). Most doors, especially double wides, have two or more springs. If one breaks, as they ultimately will, the motor won't have enough mechanical assistance from the spring to lift the door; however, gravity and one good spring will certainly close it.
I know that that is a lift-master opener. chamberlain owns lift-master. but if its a new opener your looking for try the lift-master 3800 jack shaft opener. it features a low profile design that mounts next to the door instead of on the ceiling above the door, and also incorporates a battery backup so that you will never be locked out again.
I just had the same problem. Extreme cold, garage door stops working,
motor hums, same here. I opened up the my garage door opener(after
unplugging it), and found that the wormwheel had a wear spot on it.
This is the gear that allows the motor to raise and lower the garage
door. Any way, after the wife "sugested" that the door was too heavy to
lift, I went and bought a new garage door lifter. But if you are handy
dandy with tools, I have seen the wormwheel for sale here.
http://www.aaaremotes.com/gearsprocask.html It's the plastic wheel
that went bad on me. If I would have found this before buying the
garage door opener, I would have got the sprocket assembly. I hope this
helps!
I have had same problem. Replacing the motor start capacitor fixed it. Capacitors can go bad in an instant when they get old, particularly if they are perturbed while servicing other parts.
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