Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+
These lights used to come on when you walked across the beam. so when you had your door open for a while the light would come back on if you entered or crossed the safety beam or garage door opening
Hello,I was an installer for sears and had over 27,000 installations under my belt! I am extreemly familiar with theese machines and I can tell you this : Your absolutely correct that the lights do trip on when you cross the beam ,this was a new feature started around 8 years ago on the liftmaster brand that makes also the craftman line and the home depot speacial the chamberlain line , all theese machines are identical in internal parts and remotes and keypads that will work on any of theese machines ,now do the light on the machine work from the wall pad ? and do you have the premium console with the light function? do the infrared sensors work when you cross it,s path when the door is coming down? if all that is still working properly then the sensors are working and sending the correct signal to the mother board ,your problem would be safe to say is in the board and they are easy to replace but rather expensive around 79 dollars ,so my sugestion is that the feature is nice when your outside talking to your neibor and come in thru the garage where the lights are probably off already and can have lights come on as soon as you enter ,But with more new idea,s being built into theese machines theirs room for more failure so the bottom line is if you can live with it then it won,t cost you ,if you like the feature and can,t live without it and for safety then order the part by taking the model # off the board and google craftman logic board and try and find yourself a decent deal on one that you can replace just by removing 4 screws onthe corners and a 16 pin plastic connector that just plugs into it counterpart wired to the machine , it,s simple and it takes me 5 minutes ,maybe a first timer 10 minutes ,but i have to admit that i use power tools that zip the screws out in seconds ,Well i hope you choose which option is best for you and I Thank you for your question ,if you feel i was of help to you please leave a good rating Sincerely Glenn Mayer
Posted on Mar 05, 2009
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Posted on Jan 02, 2017
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