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Question About Craftsman Garage Door Opener 139.53978SRT
Sometimes my door will not go down. The begins to ...

Sometimes my door will not go down. The begins to descend then blinks and goes back up. Nothing is blocking the sensors but if I hold he wall button down coninuously, the door will go all the way down. How can this be resolved?

Asked by kim on 04/26/2013 1  Answer

ManualsOnline posted an answer 11 years, 6 months ago

The ManualsOnline team has found the manual for this product! We hope it helps solve your problem. Get the Manual Here

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