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.
Springs
The lifting hardware takes the strain so the opener does not have to. We replace springs, cables and bearings before their wear passes down the line to more expensive parts.
Garage Door Roller ReplacementNew springs went in last year and the door balances well, yet it still clicks along the ceiling track like a train over rail…
Garage Door Hinge ReplacementThe car nudged the door on the way in.
Garage Door Track Repair or ReplacementAfter a decade of slushy winters the bottom foot of the track is flaking rust.
Garage Door Cable ReplacementYour older door has springs along the tracks, and one cable has slipped off its pulley and dangles slack.
Torsion Spring ReplacementYou heard a sharp bang from the garage, and now the opener hums for a second and gives up.
Extension Spring ReplacementThe door climbs with the left corner ahead of the right, then twists as it turns into the ceiling track.
Garage Door Balance AdjustmentWith the door closed, daylight shows under one bottom corner and the seal is squashed flat at the other.
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