Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+

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Motor moves 5 in" and reverses and light blinks 5 times

I have a craftsman 1/2 hp that is about 2 years old. The learn light flashes 5 times and the door goes down about 5 inches and returns. No light bulbs flash(misalighned sensors) and i have tried reprograming openers and evertything else. In the manual it says replace rpm sensor-Idid two times-same thing. One of my sensors has no light at all- I think the bulb may be burned out; the light still comes on when i walk through it and i have put them within 10 inches of each other and still no light on one of the sensors.It was working with only one light for a long time. I have replaced the logic board about 6 months ago and dont want to do it again. The learn light does not flash 6 times indicating logic board problems. help

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  • meisbepat Feb 18, 2009

    I just bought 2 new door openers. I only installed the first one and am having the same issue. I get about 6" of downward travel then it reverses and gives me 5 blinking diag lights. No flashing unit lights indicating eyes, and both eyes have solid lights. I took it apart and swapped the rpm sensor with the other unit. Same thing, 6" of downard travel then it reverses and gives 5 lights. I'm to the conclusion that my only other option is the logic board, but the thing is BRAND NEW. Do you think it could really be the logic board?

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In the manual it says if you can hold the wall button down & door closes. You have a short in the wiring to the reciever eye. Try substituting some new bell wire in its place, or test the wires for continuity.

Posted on Jan 29, 2009

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Replace safety eyes

Posted on Jan 29, 2009

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