The Rule of Thumb
Most garage doors that won't open are dealing with something electrical or sensor-related, not a broken spring — so check the simple stuff before assuming the worst. The exceptions: if the door feels dead silent with zero response and you just had a lightning storm roll through, suspect the opener itself. If the door was already groaning or sagging on one side before it quit, a spring or cable is the likely culprit. And if your home sits closer to the coast where salt air reaches, rust-weakened hardware can fail without much warning at all.
Symptoms Worth Noting Before You Call Anyone
What the door does (or doesn't do) when you try to open it tells a technician most of what they need to know before they even arrive. Pay attention to these details:
- Complete silence — no motor hum, no clicking, nothing happens when you press the remote or wall button.
- Motor hums but the door doesn't move — you hear the opener trying, but the door stays put or only shudders.
- Door opens a few inches then stops or reverses — it starts the cycle but won't complete it.
- Blinking light on the opener unit — many openers flash an error code pattern that points to a specific fault.
- Door feels extremely heavy when lifted by hand — a sign the spring system isn't doing its job anymore.
Note which of these matches your situation. It will save time whether you're troubleshooting yourself or describing the problem over the phone.
The Order a Technician Actually Checks
1. Power to the Opener
This is always step one, and it's the most overlooked. A tripped breaker, an unplugged cord (sometimes knocked loose during storage shuffling or yard work), or a dead GFCI outlet in the garage will make the opener act completely dead. The fix here is simply resetting the breaker or outlet and confirming the opener has solid power. After heavy storms with power flickers, this is worth checking even before you touch the door itself.
2. Remote, Keypad, and Wall Switch
Dead batteries in a remote are common and easy to miss. A technician will also test the wall-mounted switch directly, since a loose wire or a switch that's taken on moisture from a humid garage can stop sending the signal even though the opener itself is fine.
3. Safety Sensors (Photo Eyes)
The two small sensors near the bottom of the tracks have to see each other in a clear, unbroken beam or the opener won't complete the cycle at all — this is a safety feature, not a malfunction. Humidity and the afternoon downpours common here can fog the lenses or leave a film of moisture and dust on them. A technician wipes the lenses clean and checks the alignment, since a sensor nudged out of position by a broom, a stored bike, or a bump from a vehicle will cause the exact same symptom.
4. Manual Release / Emergency Disconnect
If the red release cord has been pulled — sometimes by accident, sometimes during a power outage when someone needed to open the door manually — the opener is disengaged from the door entirely. Re-engaging it is usually a simple reset, and the tech verifies the trolley carriage is locked back into the opener arm.
5. Springs
If the door was heavy or already struggling before it stopped, this is where attention turns next. Torsion springs and extension springs store the tension that actually lifts the door's weight; the opener motor isn't strong enough to lift a garage door on its own. A broken spring means the door won't budge, even manually, or it will only lift a few inches before stalling. Spring replacement involves releasing stored tension safely, removing the old spring, and installing a correctly sized replacement matched to the door's weight. This is not a DIY repair — the tension involved can cause serious injury.
6. Cables
Cables work alongside the springs to guide the door's movement along the track. Frayed strands, a cable that's jumped its drum, or a snapped cable will cause the door to hang crooked or refuse to move evenly. Humidity and moisture exposure speed up corrosion on these cables over time, especially in garages without much airflow. Repair means replacing the cable and re-tensioning it to match the opposite side so the door travels level.
7. Rollers and Track Alignment
A door that's off track won't open smoothly no matter what the opener does. Bent track sections, rollers that have rusted or seized, or a track knocked out of alignment by a hard bump will all bind the door's path. Moisture and the swelling that wood and composite doors sometimes experience in humid conditions can also cause a door to bind in its track even when nothing is visibly broken. The fix involves realigning or replacing the track and swapping worn rollers.
8. Opener Motor, Gears, or Logic Board
Last on the list because it's the least common cause relative to how often people assume it first. A stripped drive gear, a worn-out motor, or a logic board damaged by a power surge during a storm can all stop the opener from functioning. These repairs usually mean replacing the damaged component or, if the opener is old and the board is failing, installing a new unit altogether.
When to Call Mcdavid Garage Door Service
If you've worked through the basics — power, remote, sensors, manual release — and the door still won't move, it's time to stop troubleshooting and get a technician out. This is especially true if the door feels heavy, hangs crooked, or you hear a loud bang before it stopped working, which often points to a broken spring or snapped cable. Our team handles Garage Door Spring Repair and Garage Door Cable Repair safely, with the right tools and properly sized parts for your door's weight, along with full Garage Door Opener Installation if your current unit is the actual point of failure.
If your garage door in Mcdavid, Century, Cantonment, or anywhere nearby won't open, give Mcdavid Garage Door Service a call. We'll diagnose it in the same order outlined above and get it fixed right the first time.