Garage Door Won’t Open? Here’s Exactly What’s Causing It

Answer: Why Your Garage Door Won’t Open

If your garage door won’t open, the most common causes are:

  • Broken spring
  • Opener failure
  • Power issue
  • Cable imbalance

👉 The key is identifying whether it’s mechanical or electrical

Step-by-Step Diagnosis (Start Here First)

Before assuming the worst:

  1. Check if opener has power
  2. Try the wall switch
  3. Listen for motor noise
  4. Try lifting manually

👉 This tells you where the problem is

 

#1 Broken Garage Door Spring (MOST COMMON)

What happens:

  • Door becomes too heavy
  • Opener cannot lift it
  • You may hear a loud bang before failure

Key sign:

👉 Door won’t open but motor runs

#2 Garage Door Opener Failure

If nothing happens when you press the button:

Possible causes:

  • Motor failure
  • Circuit board issue
  • Electrical fault

#3 Power Supply Issue

Sometimes the issue is simple:

  • Unplugged opener
  • Tripped breaker
  • Power outage

👉 Always check this first

#4 Broken or Loose Cables

If cables fail:

  • Door becomes uneven
  • System may stop
  • Door may not lift at all

#5 Door Locked or Manual Lock Engaged

Sometimes overlooked:

  • Manual lock engaged
  • Slide lock activated

#6 Track or Roller Obstruction

If something blocks movement:

  • Door won’t move
  • Opener may strain

60-Second Diagnosis Table

Symptom

Likely Cause

Motor runs but door doesn’t move

Broken spring

No sound at all

Power/opener issue

Door crooked

Cable problem

Door stuck at bottom

Track issue

When This Becomes a Bigger Problem

Ignoring it can lead to:

  • Opener burnout
  • Door going off track
  • Additional damage

When to Call a Professional

Stop troubleshooting if:

  • Door feels heavy
  • You hear tension noises
  • System is uneven

Garage Door Repair in Vaughan and Nearby Areas

We service:

    • Vaughan
    • Thornhill
    • Maple
    • Richmond Hill
    • Concord

Frequently Asked Questions

Why won’t my garage door open but the motor runs?

This usually indicates a broken spring.

Likely a power or opener issue.