Question about liftmaster Chamberlain Garage Door Opener Transmitter 300MC
It sounds like you may have moved the placement of the trolley when you did this. The adjustment screws are to be adjusted 1/4 to 1/2 turn at a time. This might be the problem.
You may also have a damaged limit assembly on the inside of the unit or the metal drive shaft may need to be replaced. These are things better left to the pro's but if you can handle it and can track down the problem shoot for it. Thanks BB
Posted on Sep 03, 2010
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Jan 05, 2011 | 2004 Ford Expedition
Dec 28, 2010 | Smith Corona Office Equipment & Supplies
Aug 14, 2010 | Homedics SBM 300H Therapist Select Shiatsu...
Sep 29, 2009 | Nissan Micra Cars & Trucks
Sep 20, 2009 | 2000 Mercury Mariner
Apr 02, 2009 | 1999 Dodge Dakota
Feb 27, 2009 | Baxter Ovens
Feb 18, 2009 | HP PSC 2410 All-In-One InkJet Printer
63 people viewed this question
Usually answered in minutes!