Opener repair
Grinding, humming, reversing, a remote with no range, a door that stops six inches up. Most of it is a part and an adjustment, and some of it is not the opener at all.
The opener gets disconnected and the door lifted by hand. If the door is heavy or drifts, the opener is the victim, not the culprit, and a new one will die the same way. That test is free and it happens first.
A stripped drive gear. An up- or down-travel limit set wrong. A photo-eye knocked out of line. A weak receiver or a bundled-up antenna wire. A door that has gone heavy. Between them those account for the large majority of “my opener is dying” calls.
Force is not the same thing as balance
This is the distinction the whole page turns on, and it is worth being clear about because it is where money gets wasted.
Balance belongs to the door. It is the relationship between what the door weighs and how hard the spring is pulling back. Get it right and the door is nearly weightless through its whole travel.
Force belongs to the opener. It is the limit on how hard the motor is allowed to push and pull before it decides something is wrong and stops. On most units it is a pair of adjustments marked up-force and down-force.
Those two get conflated constantly. A door that has gone heavy makes the opener work near its force limit, so the opener trips, strains, hums or reverses. The tempting fix is to raise the force so the opener stops complaining. That works for about a year, during which the motor and the gears are worked past what they were designed for, and it removes the safety margin that made the opener stop in the first place. The correct fix is to make the door light again.
Six inches and stop
The single most common opener complaint, and it is usually not the opener. Two causes:
The up-travel limit may simply be set at six inches, so the opener believes the door is fully open and shuts off. Nothing is broken; the adjustment has drifted or somebody bumped it.
Or the door is binding in the first foot of travel — a bent track, a seized roller, a bottom bracket that has moved — and the opener is hitting its force limit and giving up. That is the safety system doing exactly what it is for. The answer is to find the bind, not to give the opener permission to push through it.
What we repair rather than replace
Drive gear kits
On chain and belt units, the nylon gear that the worm drives is deliberately the weakest part in the chain, so that it fails instead of the motor. When you hear the motor running happily while the door does nothing, that gear has usually shredded. It is a kit, a bit of grease and an hour, not a new machine.
Limits and travel
Older units have screw-driven limit switches; newer ones learn their travel electronically. Either can be set correctly in a few minutes, and it is astonishing how many doors are living with a limit that was set on a hot afternoon and no longer suits.
Safety eyes
Brackets get kicked, lenses get webbed, wires get pinched under a staple. A blinking opener light during a close attempt is nearly always this. What we will not do is bypass them so the door closes.
Receivers, remotes and the antenna
If the remote works at ten feet and not at thirty, look at the wire hanging from the opener head. It is the aerial. It should hang straight down, uncut, not zip-tied to the rail. Cheap LED bulbs in the opener are the other common range killer — they are electrically noisy right next to the receiver.
Wall buttons and wiring
Two thin wires stapled along a wall for twenty years eventually get nicked. An intermittent door that operates by itself is very often a shorting wall-button wire, not a ghost and not a neighbor's remote.
When a new opener is honestly the answer
When the logic board has failed on a unit whose boards are no longer made. When there are no photo-eyes at all, which means it predates the 1993 requirement and cannot be brought up to standard. When the housing is cracked and the rail is bent. In those cases we will say so, and we will still balance the door first, because bolting a new motor above a heavy door is how you buy two openers.
Side section — the opener head, the rail, the trolley, and the arm to the top section.
It nudges a door the spring is already holding
A half-horsepower motor cannot lift a 180-pound door and is not asked to. The spring on the header holds nearly all of it; the opener moves the last eight or ten pounds and holds the door where the limits tell it to stop.
That is why the first thing we do to an opener complaint is disconnect the opener. If the door is heavy in your hands, the opener was never the fault — it was the part that complained first.
What it costs
- Attend and diagnose
- $89.00, including the balance test and both safety tests.
- Drive gear kit fitted
- $150 – $195 including the kit, on common chain and belt units.
- Limits and force set correctly
- Included in the call-out. Setting the force to its correct value is part of the job; raising it to mask a fault is not something we do at any price.
- Safety eye pair replaced
- $95 – $130 fitted and aligned.
- New opener supplied and fitted
- Quoted per unit. It comes with the door balanced first and the old opener taken away.
Example figures on a demonstration site. They are the shape of real pricing — a call-out plus parts — not a quote from anybody.