Mr. Shmidt’s garage door opener made loud grinding noises, and the door began jerking up and down during use. He feared using his garage door, in case the problem got worse and led to a complete breakdown.
Since we couldn’t find any problems in the drive chain or trolley system, we opened the box itself. The motor was full of dust, and a bit of insulation came off and fell into the gears. A thorough cleaning and extrication job got the opener working almost as good as new.
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* $29 service call - deducted from the service
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