South Dade
Photo-Eye Repair in Princeton
Photo-eye repair is for a door that closes only while the wall button is held down. The eyes have lost aim, the lens is dirty, sun is washing one sensor, or the wire is damaged. A box or a broom in the beam does the same thing as a failed eye. Holding the wall button all the way down is a one-time close, not a daily method.
Why the door reverses or blinks
The door starts down, then returns, and the opener light blinks a sensor pattern. Sun on one eye, a lens filmed with dust, or a sensor knocked out of aim breaks the beam. A staple through the low wire, or a chewed stretch near the floor, drops the signal the same way. Something stored in the beam path is a common cause that looks exactly like a bad sensor.
What you can clean and realign
Wipe each lens with a damp cloth, and see whether the small indicator lights agree with each other. Check that both eyes point at one another and that no stored item sits in the beam. Remove the blockage and try one close, then stop if the door still reverses at the floor. Never touch the springs or the cables, and do not tape over the eyes and leave them taped.
Aim, wire, and only then new eyes
On the visit the aim is corrected and the lenses are cleared before any sensor is condemned. The wire is traced from each eye back to the opener, including staples and low splices along the jamb. New eyes go in only when aim and wire cannot restore a steady beam. A close is tested from the wall button and from the remote after the lights stay steady.
How the beam and the close limit differ
The sensors sit a few inches off the floor and must see each other for the whole close. A limit set too far down makes opener force the seal and then reverse, can look like an eye fault. The blinking pattern helps separate a beam loss from a force trip at the floor. Both are adjusted on a door that is already balanced, so the motor is not fighting spring weight.
Glare on doors under hot roofs
Photo eyes in unconditioned slab garages under hot roofs can lose the beam to late sun. An open view toward farmland, or a door that faces lots along US-1, gives that low sun a straight path in. Heat in the bay is a separate clue when the opener also stumbles after the roof has baked. Say whether the reverse happens mainly when the sun is low on the opening.
Request this visit.
Call (645) 256-1794 about this door.
We answer any hour Sunday through Friday.
Saturday stays closed.
Keys Door Co is family-owned, local, and insured.
We have worked this coast for over ten years.
Common questions
Why does the garage door close only if the wall button is held?
The opener is letting you override a photo-eye fault for a single close while your finger stays on the button. That hold-down close is a one-time way to shut the door, and it is a poor habit.
Can sunlight on the sensor make a good door reverse?
Sun aimed into one lens can blind the beam and send the door back up. It often shows up late in the day on an opening with a clear view outside. Aim, shade on the lens, and a clean eye are checked before the sensor is replaced.
Should the sensors be replaced as soon as the light blinks?
A blink means the opener lost the beam or hit a force limit, not that the eyes are already scrap. Aim, dirt, wiring, and objects in the path are corrected before new sensors are fitted. New eyes come after those checks fail to hold a steady beam through a full close.
Request service
Name the street and whether the door is up, down, or stuck.
- Repairs and replacement parts
- Openers and controls
- New garage doors