Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+
After pressing the open button on the garage control the door only moves for 2 seconds and then goes back to the original position like if there was some sort of interference. on the other hand if i press the button and hold it down it will go all the way. any help will be appresiated
A couple things you need to check right off. First is the door springs. They are usually above the door and if one of them breaks they will cause this. Check closely they sometimes look okay. The next thing is to remove the cover and check the drive gear of the opener. Usually this is obvious when it goes bad because you will find what looks like white sawdust on the inside of the cover. If both of these are okay you can increase the 'up force'. This is normally on the back of the motor unit near all those white wires depending on the manufacturer.
Posted on Jul 21, 2009
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Posted on Jan 02, 2017
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FIRST CHECK TO SEE IF THE LOCK/VACATION BUTTON ON THE WALL CONTROL HAS BEEN ACTIVATED. THE LED ON THE WALL CONTROL WILL BE FLASHING. - SIMPLE SOLUTION PUSH THE LOCK BUTTON AND HOLD FOR 2 SECONDS TO TURN OFF LOCK FUNCTION.
SECOND TRY TO REPROGRAM THE REMOTES TO THE UNIT - THEY WILL SOMETIMES LOSE MEMORY IN AN ELECTRICAL STORM.
IF REPROGRAMMING DOESN
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