Why does my garage door reverse before it closes?

That is almost always the safety sensors. If the two photo-eyes are misaligned, dirty, or blocked, the opener thinks something is in the way and sends the door back up.

Why are my garage door sensor lights blinking?

A steady light means the sensors see each other; a blinking or off light means they do not. Bumped brackets, spider webs, dirt, or a loose wire are the usual reasons.

Can I fix garage door sensors myself?

You can wipe the lenses clean and check nothing is blocking them. If the lights still blink after that, the brackets or wiring likely need adjusting, and that is where we come in.

Do you realign or replace the sensors?

We try realignment and cleaning first, since that fixes most cases at the lowest cost. If a sensor or wire is truly failed, we replace it and test the safety reverse.

Is it safe to use my door with bad sensors?

The sensors are a key safety feature that stops the door on a child, pet, or car. If they are not working, have Tek Garage Door Repair fix them right away rather than bypassing them.

Garage Door Sensor Repair in Chicopee, MA

Q: How much does garage door sensor repair cost?

Sensor repair is one of our smaller jobs. Many calls are a quick realignment or cleaning; a bad sensor or wire costs a bit more. Tek Garage Door Repair gives you the exact price before starting, and you approve it first.

Your garage door sensors are a safety feature that must work

The two small photo-eye sensors near the floor send an invisible beam across the opening. If anything breaks that beam, the door stops and reverses so it cannot close on a child, pet, or car. When they act up, the door refuses to close right. Tek Garage Door Repair gets them working and safe again.

Common garage door sensor problems

The door reverses right before it touches the floor.
The door will not close unless you hold the wall button.
A sensor light blinks or is off instead of steady.
The opener lights flash and the door beeps at you.
A bracket got bumped and knocked the sensor out of line.

Misaligned or dirty sensors are the usual cause

Most of the time the two photo-eyes just need to face each other again. A bumped bracket, a dusty lens, a spider web, or a stray leaf is enough to break the beam. Tek Garage Door Repair realigns and cleans the sensors, checks the wiring, and watches the door run through a full safe cycle.

Realign first, replace only if we have to

We start with the cheapest fix that works — cleaning and realignment. Only if a sensor is truly dead or a wire is damaged do we replace parts. That keeps your cost down and gets your door closing on the first tap of the button.

How much does garage door sensor repair cost?

Sensor repair is one of the smaller jobs we do. A cleaning and realignment sits at the low end, while a failed sensor or damaged wire costs a little more. Rather than guess, Tek Garage Door Repair gives you the exact price before we start — you approve it first, with no surprise fees.

Fast sensor repair across Western MA

A door that will not close leaves your home open and unsafe. Call Tek Garage Door Repair at (833) 341-0175. We are open 7 AM to 10 PM every day and fix most sensor problems the same day.

Last updated August 2026