If The door starts to close, then reverses and the opener light blinks.
Then Photo-eye alignment.
The sensors near the floor are out of line or dirty; a clean and re-aim usually restores normal closing.
Inspection, adjustment, sealing, and section-level repairs.
Repairs
Doors wear from the bottom up. The seal along the floor hardens, the lowest rollers pick up grit, and the bottom brackets take the salt. Repair and maintenance work starts with those parts and follows the wear upward through hinges, tracks and the panels themselves.
Garage Door Safety InspectionIt has been a hard winter.
Garage Door Tune-UpSince the first cold snap the door has been sluggish.
Off-Track Garage Door ResetYour car is inside and the door is stuck crooked across the opening.
Garage Door Panel ReplacementA stray ball went through one of the window panes in the top section.
Garage Door Bottom Seal ReplacementAfter a spring rain there is a puddle inside the door that reaches the tires.
Garage Door Perimeter WeatherstripDry leaves keep appearing in the same corner inside the garage, and this fall there were mouse droppings along the wall beside…
Garage Door Manual Lock RepairThe outside handle wobbles in your hand and the inside knob spins round and round with nothing attached.
Which fix fits?
Tap a situation. The answer opens here.
If The door touches the floor and pops back open.
Then Close-limit adjustment.
The opener thinks it hit something; setting the travel limit correctly stops the bounce.
If The door closes but leaves a gap along the bottom.
Then Bottom seal and limit setting.
A compressed seal or a short travel limit leaves daylight; both are simple to correct. Garage Door Bottom Seal Replacement