Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+
Was working normally for about a year and then suddenly started having problems oftenlly until now that is only lifting about 5 inches. When push buttom back again coes down bounce and stay open 3 inches and that is all.
Now I released de mechanism and use it manually.
Does this thing has a processor to control the process?
I check the alignment of the sensors and are ok.
Please help thanks Guillermo
Bought it at Sears
First thing to check is the door springs. You most likely have a broken one. Look close it is sometimes hard to see that they are broken. Also remove the cover and check the drive gear. It is a white nylon gear just in front of the motor and may be stripped.
Posted on Jun 19, 2009
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Posted on Jan 02, 2017
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