I am having difficulty with the LiftMaster 3240M 1/2 HP. For some reason the garage door wont stay down. There is damage where the L arm connects to the garage door, is this likely the cause? Looking for any suggestions on how to fix this problem.. Thanks so much!
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LiftMaster 3240M 1/2 HP Garage won't open or close - trolley troubleshooting
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imapilot, the door damage is more likely a symptom of the issue rather than a cause. The door reversing off the floor typically means the travel needs to be adjusted. Please take a look at this article for some tips: http://bit.ly/2g9Uo56
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