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robertarso

Sears 1/2 hp garage door opener

robertarso
17 years ago

My garage door opener will open the door but not close it all of the way. The sensors work because if you block the beam the ligh bulb comes on. The tension on both cables for all practical purposes are the same. All rollers are free and the door jerks on the way down. It would stop when the top panel started to go around the bend. Afer tryin to adjust some of the adjustments it harldy moves down or up now,I know, I know don't turn a control just to tinker, I beat myself up on that already. Before I touched the adjustments the chain would go in both directions when it was disengaged from the door. Short of leaving the door up all of the time what may be the problem. Thank you for helping

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