Garage Door Opener Repair in Chandler, AZ

When your opener hums without moving, reverses before the door closes, or ignores the remote, the cause is usually one part: a sensor, a drive gear, a logic board or a setting. GT Garage Door Repair finds that part, gives you a price before any work, and fixes most openers on the first visit, the same day you call. We are a veteran-owned, family-operated company based in Chandler, and we service LiftMaster, Chamberlain, Genie and Craftsman openers.

Last updated October 2026.

Licensed, bonded and insured · ROC 358301 · Same-day service

Call (602) 680-9700 Get a Free Estimate

GT technician repairing a garage door opener rail at the garage ceiling

What Your Opener Is Telling You

Most opener problems show up as one of a handful of symptoms. The table below matches each one to its usual cause and tells you whether it is normally a repair or a sign the unit is near the end.

Symptom	Likely cause	Usually repairable or time to replace?
Motor hums, door does not move	Stripped drive gear, failed start capacitor, or a broken spring making the door too heavy to lift	Usually repairable. If a spring is broken, the spring gets fixed first
Door starts down, then reverses back up	Photo-eye sensors dirty, knocked out of line, or wired poorly; close force set too low; door binding in the track	Usually repairable
Door will not close and the opener light blinks	Sensor fault: misaligned lens, damaged wire, or sun shining directly into a sensor	Usually repairable
Wall button works, remote does not	Remote battery, lost programming, or radio interference from certain LED bulbs	Usually repairable; see remotes and keypads
Nothing happens at all	Tripped breaker or GFCI outlet, unplugged unit, or a failed logic board	Repairable when the board is still available; an old unit with a failed board is often better replaced
Opener runs, door stays put	Trolley disengaged by the emergency release, or a broken carriage or belt	Usually repairable
Loud grinding, chain slapping the rail	Loose chain, worn sprocket, dry rail	Usually repairable
Door stops partway or goes past the floor	Travel limits drifted, or worn limit switch	Usually repairable
Opener made before 1993 with no photo-eyes near the floor	No entrapment protection	Replace, do not repair

Photo-eye sensors are a frequent cause of opener trouble, and their position matters. DASMA's guidance on photo-eye sensor placement (opens in a new tab) calls for sensors mounted low, near the floor, so a small child cannot crawl under the beam. In Arizona, dust storms coat the lenses and a low afternoon sun can shine straight into a west-facing sensor, so we clean, realign and shade them as part of the repair.

Close-up of a garage door opener belt and drive gear during a repair

Check the Door Before Blaming the Opener

An opener is built to move a balanced door, not to lift its full weight. When a spring breaks or a cable frays, the door gets heavy, and the opener strains, hums or reverses. Replacing the opener in that case leaves the real problem in place and wears out the new unit.

That is why every opener visit starts with the door. We disconnect the opener, lift the door by hand and check that it stays put halfway. If the door slams down or shoots up, the fix is broken spring repair or garage door cable repair, not a new motor. If rollers are grinding or the door rubs the track, roller repair may clear up what looked like an opener fault.

Technician checking the torsion spring and opener in a lit garage

Veteran-Owned, Family-Run, and Based in Chandler

GT Garage Door Repair is a veteran-owned, family-operated garage door company based in Chandler.

Veteran-owned and family-operated in Chandler, AZ
Licensed, bonded and insured: Arizona ROC 358301 (verify our license (opens in a new tab))
Free, upfront estimate before any work begins
Same-day service is our standard, not an upcharge

GT Garage Door Repair on Google Maps (opens in a new tab)

Is It Worth Repairing, or Time to Replace?

Repair makes sense when the opener has its safety features, parts are available, and the fault is one part. Drive gears, sensors, capacitors, limit switches and most logic boards are standard repair parts for the brands we service.

Replacement makes sense in three situations:

The opener predates 1993. Federal rules under 16 CFR 1211 (UL 325) (opens in a new tab) have required automatic reversal and entrapment protection on residential openers since 1993. An opener without photo-eyes should be replaced, not repaired.
The board has failed on an older unit and replacement boards are discontinued or cost close to a new opener.
It keeps coming back. If the same opener has needed several repairs and still struggles, money is better spent on a new unit.

DASMA's FAQ on automated residential garage door systems (opens in a new tab) covers the reversal and sensor requirements every working opener should meet, whatever its age. When replacement is the honest answer, we tell you before any work and explain the options on our garage door opener replacement page.

What Happens on an Opener Repair Visit

The technician checks the door balance first, then tests the opener: wall button, remotes, sensors, travel and force. You get a plain explanation of what failed and a price before any work starts.

Most repairs are finished on that visit. Before we leave, we run the door through several full cycles, confirm it stops at the floor and the top, and do the reversal test with a 2x4 laid flat under the door. If your remotes or keypad lost programming during the repair, we reprogram them on the spot.

Adjusting the settings on a LiftMaster garage door opener

What You Can Safely Check Before You Call

A few checks are safe for any homeowner and sometimes solve the problem:

Confirm the opener is plugged in and the outlet has power. Garage outlets are often on a GFCI that trips.
Wipe both sensor lenses with a soft cloth and look for a steady light on each one.
Replace the remote battery and try the wall button.
If the door is fully closed and the opener will not run, you can pull the red emergency release handle to open the door by hand. Do not pull it with the door open; a door with a broken spring can drop.

Do not touch springs, cables or the bottom brackets; DASMA's homeowner checklist (opens in a new tab) is clear that those parts belong to a trained technician. If the door looks crooked or heavy, stop using the opener and call.

Questions

Garage Door Opener Repair FAQs

Why does my garage door go down and then come right back up?

Most of the time, the photo-eye sensors near the floor are dirty, out of line, or have a damaged wire, so the opener thinks something is in the way. A door that binds in the track or a close force set too low can do the same thing. Wipe the lenses and check that both sensor lights are steady. If it still reverses, we can find the cause on a same-day visit.

My opener hums but the door does not move. What is wrong?

A hum with no movement usually means a stripped drive gear, a failed start capacitor, or a door that is too heavy because a spring broke. Do not keep pressing the button, because the motor can overheat. If the door is fully closed, look up at the springs above the door for a visible gap. Either way, call us and we will check the door before the opener.

Can you repair an opener that is more than 20 years old?

Often, yes, if it has photo-eye sensors and parts are still available. Gears, sensors and capacitors for older LiftMaster, Chamberlain, Genie and Craftsman units are usually easy to get. If the opener was made before 1993 and has no sensors near the floor, we recommend replacing it, because it lacks the entrapment protection federal rules have required since then.

Does Arizona heat damage garage door openers?

Heat is hard on electronics. A closed garage gets hotter than the outdoors in summer, which stresses the logic board and shortens backup battery life. Dust from monsoon storms also coats sensor lenses and dries out the rail. Keeping the garage ventilated and having the opener checked during a yearly tune-up helps catch problems early.

Is there a charge to diagnose my opener?

There is no charge for the estimate: every visit starts with a free estimate. The technician checks the door and the opener, tells you what failed, and gives you a price before any work begins. You decide whether to go ahead.

Garage Door Opener Repair Across the East Valley

We repair openers in homes across the East Valley, from 1980s Tempe garages to San Tan Valley builds whose original openers are now wearing out.

Not on the list? Call (602) 680-9700 and we will tell you right away whether we can get to you today.

Schedule service

Get Your Opener Working Again Today

Tell us what the door is doing and we will send a technician the same day with the parts most openers need.