What safety precautions should I take?

Unplug the opener (and disconnect any backup battery) before touching it, keep the door closed and secured, and never touch the springs, cables or bottom brackets.

Can I repair the motor myself?

We don't recommend it. It involves electrical work next to a door held up by high-tension springs. Simple fixes like batteries, sensor alignment and resetting the opener are fine.

What tools do technicians use?

Standard hand tools plus a multimeter to test the motor, capacitor, limit switches and logic board.

How is the motor tested?

A technician checks the power supply, capacitor, motor windings and control board to find exactly which part has failed.

When should the motor be replaced?

When it's burnt out, corroded or fails testing. On an older opener, replacing the whole unit is often better value than a new motor.

How do I choose a replacement?

Replacement motors and boards must match the opener's make and model exactly. If you're replacing the whole opener, choose one sized for your door.

What maintenance prevents motor problems?

Keep the door balanced, lubricate the moving parts, keep the tracks clear and book a yearly tune-up. A door with worn springs is the biggest cause of burnt-out opener motors.

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Openers May 11, 2023Updated October 11, 2026 3 min read

How Do I Fix My Electric Garage Door Opener?

In this article

Step 1: Describe the Problem
Step 2: Safe Checks You Can Do
Step 3: Rule Out the Door
Signs the Motor or Gears Have Failed
Why Motor Repair Is a Job for a Professional
Preventive Maintenance

Safe checks to try when your opener stops working, and when it's time to call a professional.

Opener problems are common, and many have simple causes you can check yourself. When the motor itself has failed, though, the repair is best left to a technician. Here's how to tell the difference.

Step 1: Describe the Problem

Does the door move slowly, not at all, or make unusual noises? Does the opener light come on? Does it hum? These clues help pinpoint the cause.

Step 2: Safe Checks You Can Do

Power: is the opener plugged in, and has the breaker or GFCI outlet tripped? Plug a lamp into the outlet to test it.
Remote and wall button: replace the remote battery and try the wall button. If the wall button works but the remote doesn't, the remote needs a battery or reprogramming.
Lock mode: many wall controls have a lock or vacation button that disables remotes. Make sure it's off.
Safety sensors: clean the lenses and make sure both indicator lights are steady. Re-aim them if one is blinking.
Obstructions: check the tracks for anything blocking the door.

Step 3: Rule Out the Door

Close the door, pull the red emergency release and lift the door halfway by hand. If it's heavy or won't stay put, a spring or cable has failed. Don't use the opener; call us.

If the door moves easily, reconnect it. The problem is in the opener.

Signs the Motor or Gears Have Failed

The motor hums but the door doesn't move
Grinding, clicking or a burning smell
Plastic shavings under the opener (stripped gears)
The opener works only intermittently or cuts out partway

Why Motor Repair Is a Job for a Professional

Opening the motor unit means working with household voltage and, on many models, a backup battery that stays live when unplugged. The door must also be secured, because it's held by springs under high tension. Wiring a replacement motor or logic board incorrectly can damage the opener or create a fire risk. Our technicians carry common gears, logic boards and motors and can usually repair the opener on the first visit. If the opener is old, we'll tell you if a new one is better value.

Preventive Maintenance

Lubricate the chain or screw and the door's moving parts, check for wear, keep the tracks clean and test the safety features monthly.

Frequently Asked Questions

The door moves slowly or not at all, the motor hums without moving the door, or it makes grinding or clicking noises. Rule out power, the remote and the springs first.