Question about Chamberlain & Liftmaster Garage Doors

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Have an old superglide model G-6456.Recently opened door which quivered while beginning to open about 2' and stopped.when I lift door very slightly with my foot it then opens completely. Today door would not open.The opener breaker was tripped.Reset.Door opens but again quivers while opening. Would this be a V belt issue? tx.

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6 Suggested Answers

Anonymous

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Posted on Jan 02, 2017

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Anonymous

  • 1 Answer

SOURCE: Chamberlain Whisper Belt Drive

door does not close without holding wall button in

Posted on Nov 21, 2008

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Anonymous

  • 244 Answers

SOURCE: Chamberlain garage door opener won't close

read manual, if you have, on trolley engagement

Posted on Jan 17, 2009

glenmann62

Glenn Mayer

  • 91 Answers

SOURCE: Chamberlain garage door opener unit-is it compatible with craftsman keypad?

Hello,Linda well this is your lucky day ,I have installed garage door openers for sears for 10 years and i can tell you that craftsman,chamberlain ,and liftmaster are all the same machine and manufactured under the liftmaster name , if you buy it from home depot it will be a chamberlain ,if you buy it at sears ,it will be a craftsman, and if you go to commercial building supplier it will be a liftmaster! now getting that out of the way even though they are all compatible ,there is one thing that stands in their way and that,s time ,For example if your chamberlain machine is 5 years old and you went to sears last week ,the chances of the frequency being the same are not good , most likely you have the wireless keypad , one way to test the sears keypad against the chamberlain machine is to locate the smart button on your machine ,this button allows for programming of remotes and keypads , to test and see exactly what im talking about take your remote and locate the smart button ,if you have three buttons on the remote press one of the buttons that are not being used on the remote ,above the smart button their will be a blinking light ,if you press your remote button you will notice the light go from a blink to a rapid flash , This is telling you that you are sending a signal for programming to the machine , well the keypad is exactly the same all you have to do is push the enter button on the keypad and have someone watch for the rapid blinking light ,if they are compatible the light will blink rapidly on the machine so all you have to do now is have someone press the smart button once on the machine your indicator light will now be a solid light you will have approx 60 seconds then to put a 4 digit code in the keypad and then press and hold down the enter button on the keypad , at this point you will notice the lightbulbs on the chamberlain machine to shut off and come back on this is to tell you that the machine accepted the code , after thats been done you can use your keypad , you can also find the owners manual to the chamberlain and follow the same instructions to programming the remote , they are identical in programing , if your keypad is not the same frequency you can also tell by looking at the frequency code on the backside of the keypad and also the chamberlain unit usually where the light bulb is will be its code

Posted on Mar 04, 2009

Anonymous

  • 12 Answers

SOURCE: need to replace carriage on stanley sd450 opener how is it done?

Please make sure you don't have broken springs first and that the door is balanced properly. If so you can replace the "Trolly" by disconnecting the arm from the opener, undoing the opener from the bracket that mounts it to the wall. This usually takes a 1/2 in wrench. Then swing the opener out far enough to slide the trolly off and replace it with a new one. Re-connect everything then re-engage the trolly.

Posted on May 19, 2009

Anonymous

  • 1 Answer

SOURCE: Hi there. I have a Chamberlain Whisper Drive

I just had that problem this morning and the cause was that the springs that help hold the weight of the garage door were broken. This caused the garage door opener to raise the garage door a fe inches and then drop again. We called in a professional and $200 later we had new springs and everything works fine now.

Posted on Dec 17, 2009

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How is the door balanced currently? In manual setting (without the opener) can it be raised by hand, will it hold at it's halfway point, and will it hold at fully open?

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I just replaced my rollers (Ideal Security SK7123 1 7/8-in Deluxe Nylon Rollers Commercial Grade 11 Ball Bearings) and they made a world of difference to quietness and opening. Plus, more importantly, they gave me clues as to the RHS being misaligned.

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