Lift Master Garage Door Not Opening All The Way

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Old 09-02-20, 08:42 AM
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Lift Master Garage Door Not Opening All The Way

I have a LiftMaster (41AC050-2M) that goes up a few feet and completely stops. It will go down as expected. I don't notice anything on the track that is preventing travel. If I really push up and help with the travel, it goes all the way as expected. Is this most likely a motor on its way out or an obstruction?
 
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Old 09-02-20, 09:43 AM
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I increased the "force" screw labeled "KG" about 1/4 turn and it works perfectly fine. Any idea why an adjustment might be needed?
 
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Old 09-03-20, 03:12 AM
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that's a circuit board number not a model number... many reasons, cold weather, door heavy, Broken spring, door needs to lubricated, it was never set when installed. It should be set around the 5-6 O'clock position
 
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Old 09-13-20, 07:18 PM
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Sorry for delay. It's Liftmaster 3280 and its most in the 8 or 9 O'clock position. Works perfectly now but not sure why a change was needed.
 
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Old 09-13-20, 09:38 PM
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Usually when an operating problem occurs with a garage door opener... you'd disconnect the door from the operator and operate it by hand to determine if there are any sticking spots or if the door balance changes.
 
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Old 09-14-20, 07:13 AM
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I tried that. I disconnected it and then tried to move by hand but it wouldn't move at all. I checked both tracks and I didn't see a blockage. I increased the force from 6PM isnt to 8 or 9PM ish and works perfectly.
 
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