Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+
Nothing is blocking the control eyes, but it keeps blinking (three times and pause) like it is blocked. I have to unplug it then plug back in for it to work. now i can't get it to work at all with the remote or the wall button.
See if there is a reset button anywhere on the unit.you can try calling the manufactuer and ask, or troubleshoot from the manual.
p.s you can also try leaving it unplugged for 30 min, then trying it out again.
Posted on Feb 14, 2008
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Posted on Jan 02, 2017
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