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Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+
Problem for Sears Craftsman LiftMaster Chamberlain Garage Door Opener...

My door doesnt open or close and the light blink




By eshenker on Nov 07, 2009

" "
my door doesnt open or close and the light blink when i try to close or open it. What can i do to repair the problem?
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Solution #1

posted on Nov 09, 2009
Not Rated)

Don0930
Don0930

Rank: Guru  Televisions & Videos  Expert
Rating: 88%, 555 votes
Make sure the door sensor are pointed at one another and the small light on each one is on and not flickering. Some tweaking may be necessary. If you can't get both lights to come on you probably have a bad sensor.
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