Why Isn't My Garage Door Motor Responding?
You press the button and nothing happens, or the opener hums and the door stays put. Here is how to tell a power fault from a dead motor and from a door that has become too heavy to lift.
Quick Answer
When a garage door motor does not respond, the most common cause is that no power is reaching the opener: a tripped RCD, a lead knocked out of its power point, or a dead outlet. If the opener's light or display is on and it still does nothing, the next suspects are travel limits or force settings that have drifted, a flat backup battery, or a failed logic board or capacitor. A motor that hums or clicks without moving the door is usually a different problem again: a broken spring or cable has left the door too heavy for the opener, and the motor is straining against that weight rather than failing itself. We run more than one van across Perth, each carrying common opener parts, so most motor faults are fixed in one visit, same day, with no call-out fee.
Common Causes
No power reaching the opener
The easiest fault to miss. A safety switch that tripped in a storm, a plug bumped loose behind the motor head, or a power point that has died leaves the opener silent and dark. Check the switchboard and the outlet before anything else.
Limits or force need resetting
After a power cut or a brownout some openers lose their travel or force settings and refuse to run, or stop a hand-width short. The routine differs between models, so check the label on the motor and its manual before pressing anything.
A flat battery
Openers with battery backup can behave oddly once that battery is past it, and a dead wall-control or remote battery looks exactly like a dead motor. Try a second control before blaming the opener.
Logic board or capacitor failure
The start capacitor gives the motor its first shove; the logic board tells it when. Either can fail with age or after a surge, leaving the motor humming or silent. Both are replaceable parts; see the opener logic boards, capacitors and spares we fit.
A broken spring or cable overloading the motor
If a spring has snapped or a cable has slipped its drum, the opener is suddenly trying to lift the whole weight of the door. It strains, clicks or hums, then gives up. The motor is not the fault here, and forcing it will break that as well.
A safety sensor blocking the cycle
Sensors that are misaligned, dusty or dazzled by the afternoon sun stop the door closing, and on some openers stop it starting at all. A flashing light on the motor head or a blinking sensor LED points here rather than at the motor.
What You Can Check Safely
Safe to check yourself
- Look for a light or display on the opener. If it is dark, check the RCD on the switchboard and plug something else into the same power point.
- Press the button and listen. A hum or click with no movement points to overload or a capacitor; complete silence points to power, a battery or the board.
- Check that both safety sensor lights are on and steady. One that is flickering or out is often the whole reason the door will not run.
- Try the wall button as well as the remote. If the wall button works and the remote does not, the fault is in the remote or receiver, not the motor.
- With the door closed, look at the springs above it and the cables at each side for a visible gap, slack or fraying before you assume the motor has failed.
Do not attempt
- Do not keep pressing or holding the button against a motor that is humming or straining; that is how capacitors and drive gears burn out.
- Do not take the cover off the opener to inspect or poke at the circuit board. It is wired to the mains and there is nothing inside a homeowner should touch.
- Do not pull the manual release and haul the door up by hand if a spring or cable might be the real problem; the door can drop without warning.
- Do not leave a heavy door hanging on a failing cable after disconnecting the opener. Park outside until it has been looked at.
When to Call a Technician
Call a technician straight away if any of the following apply:
- The motor hums or clicks but the door does not move at all.
- A burning smell from the motor head, or the opener trips the safety switch each time it runs.
- The chain, belt or drive gear looks stripped or slack, or there are plastic shavings beneath the motor.
- The opener came with the house in a 1990s or 2000s estate and has been playing up for months.
- Power and sensors both check out fine and the door still will not respond.
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Get Help With This Problem
Prefer to call? 0466 910 028Dead opener and the car is stuck inside?
We answer 24/7, every day of the year, and come out the same day across Perth. More than one van carries common opener parts, so most dead motors are running again in one visit.
Frequently Asked Questions
Start with power. A silent, dark opener nearly always means a tripped RCD, a loose plug or a dead power point, and that is a two-minute check at the switchboard. If the light is on but nothing happens, try the wall button; if that works, the fault is in the remote, not the motor. After that the usual suspects are a lock or holiday mode left on the wall control, a flat backup battery, and finally the logic board itself. Sudden failure straight after a storm usually points to a surge that has taken out the board.
A hum with no movement means the motor has power but cannot turn the door. Most often the door has become too heavy for it: a torsion spring has snapped or a cable has come off its drum, and the opener is trying to lift the full weight on its own. Look above the door for a gap in the spring coil and at each side for slack or frayed cable. Only if the springs and cables look intact is the fault likely to be inside the opener, usually a tired capacitor or a stripped drive gear. Either way, stop pressing the button; a humming motor burns out fast, and we can tell you which it is at the opener repair visit.
Not usually a single button marked reset. Most openers sold in Australia reset by cutting the power for a minute and then re-running the travel limits, and some brands use a learn or code button held for several seconds, which also wipes every remote from memory. Because the steps differ between Merlin, B&D, Steel-Line and ATA units, follow the step-by-step opener reset guide for your brand rather than pressing buttons at random. If a reset brings the opener back only until the next power cut, the board is on its way out.
Age and pattern tell you more than any single fault. An opener that has been intermittent for months, needs the power cycled to wake it up, or has already had a board or gear replaced once is usually near the end. So is any unit for which remotes and parts are getting hard to find, which is common with original openers in 1990s and 2000s estates. A single failed capacitor on an otherwise healthy motor is a repair, not a replacement. We check the motor, drive and board at the free assessment and tell you which side of that line yours sits on; if it is a replacement, the openers we supply and install cover roller and sectional doors.
It depends on what actually needs replacing. A capacitor, a logic board or a drive gear on a sound opener costs far less than a whole new unit, and we look at the repair first before suggesting a new motor. Where a new opener is the right call, the price moves with the type of door it drives, the door's size and weight, the brand and model you choose, and whether the job is after hours. The quote is free, there is no call-out fee, and we agree the price with you before any work starts.
Stuck door, noisy door,
or time for a new one?
Book a repair visit anywhere in Perth or ask about a replacement door. Either way the quote is free and the price is settled before anyone picks up a tool.