Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+ Logo
Posted on Jun 27, 2010
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I have 1/2 horse opener and I bought it three years ago. Just put it up, work 3 time open and close then just stopped it would only open up 3 inches and stop then click. Reset the opener and tried again did the same thing, unplugged it from the wall and tried again. did the same thing open 3 inches and stop and clicks. Disconnected the door eye sensor and still does the same thing. will cost tomuch to take it to Sears to repair. Does anyone know whats wrong and can I get the parts and repair my self. Thanks Ron

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  • Master 3,197 Answers
  • Posted on Jun 28, 2010
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Check the door springs. One could be broken. Increase he 'up force'. This control is on the rear of the motor unit near where all those white wires go.

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