liftmaster Chamberlain Garage Door Opener Transmitter 300MC "adjusting springs" Questions

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Question about liftmaster Electrical Supplies

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...- it can be dangerous. If the spring is OK it probably need to be adjusted or the opener needs

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One of my springs on garage door boke, i replaced both but the tension seems to be off, I can't close the door without jamming it shut and then the up ward motion on the door is so hard I have trouble

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Question about liftmaster Electrical Supplies

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My liftmaster garage door only opens 8 inches and then stops I have a liftmaster garage door. I try to open the door with the garage door opener and the wall unit and the door only goes up about 8 ...

Question about liftmaster Electrical Supplies

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Door will stop on the third panel then go back up . the door coming down will stop on the third and fourth panel then will go back up. we can get out and hold the handle on the door and it will go all

Question about liftmaster Electrical Supplies

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How do I adjust for a lighter garage door? I removed some heavy wood panels from the garage door making it lighter. Now the door twists the rail when opening preventing it from working. Scary ...

Question about liftmaster Electrical Supplies

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my garage door wont open fully the motor is working ok it just wont go back far enough on the track to where the stop plate is There is an adjustment on the unit called travel. Turn the one that ...

Question about liftmaster Electrical Supplies

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Help, my Lift-Master garage door opens 2-3 ft Help, my Lift-Master model 1045-9 garage door will only open 2-3 feet. Is there an adjustment I can make to return it to it's proper function? This is the

Question about liftmaster Electrical Supplies

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The springs are not broke, the door sometimes goes up but does not always go down. prees the door opener and you can here it turn on but nothing happens sometimes. Sometimes it will go up. Use the ...

Question about liftmaster Electrical Supplies

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garage door goes up, but only travels about 12 inches and stops when it comes down TRY HOLDING DOWN THE WALL BUTTON TO CLOSE THE DOOR. IF IT WORKS THE PROBLEM IS IN THE SAFETY EYES. IF THE DOOR TRUELY

Question about liftmaster Electrical Supplies

1 Answer

...springs. However, before I start adjusting, I?d like to hear from somebody who has had the same problem and can confirm that my diagnosis and proposed fix are correct Thanks Dave my friend had the ...

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