Garage Door Opener
Repair in Saginaw, MI

The opener runs but the door doesn't move. You hear the motor cycle but nothing happens.

This is the most common opener failure we see in Saginaw, and the cause is almost always a stripped drive gear — the nylon gear inside the opener head that meshes with the worm drive shaft. When it strips, the motor spins freely against nothing. You hear it running, but no mechanical energy is transferring to the trolley. The fix is a drive gear kit replacement, not a new opener. We stock gear kits for LiftMaster, Chamberlain, Craftsman, Genie, and most other residential brands. Most of the time this repair is done in 45 minutes and costs $115–$165.

Why do drive gears strip? Usually because the door is out of balance — the spring has lost tension and the opener has been working twice as hard as it should on every cycle. A door that's been running out of balance for a year or two strips gears far faster than one that's properly maintained. If this is what happened to yours, we'll check the spring balance at the same visit. A yearly garage door tune-up helps catch balance problems early.

The opener hums for a few seconds, then shuts off without moving the door.

This points to the motor start capacitor. The capacitor is a small cylindrical component that provides the surge of starting torque the motor needs to overcome inertia when it first kicks on. When the capacitor weakens or fails, the motor hums at full current draw but can't generate enough torque to start moving, trips its thermal overload, and shuts down. We test the capacitor directly with a meter before condemning it — it's a $85–$130 repair when that's the cause.

The door starts moving then reverses before it closes all the way — or reverses immediately after starting.

Two likely causes: sensor alignment and down-force miscalibration. The photoelectric sensors at the base of each side of the door track send a beam across the opening — if anything interrupts it, the door reverses. In Saginaw, sensor misalignment is heavily seasonal. When the sun angle changes in October and March, the low winter sun hits the sensor lens directly through gaps in the garage structure. The opener reads this as an obstruction and reverses the door. We realign the sensors and in many cases add a shade tab to block the direct sun angle.

Down-force miscalibration is the other cause — the opener's sensitivity is set too high, so it reverses when it detects the resistance of the door seating against the floor seal. Adjusting the force setting is part of every service call we run.

The remote doesn't work — or works sometimes but not reliably.

Start with the battery. Genuinely — new batteries fix roughly a third of remote complaints. Beyond that: the remote may have lost its programming to the logic board (a reprogramming sequence fixes it), the antenna wire on the motor head may be pinched or not hanging fully extended (kills remote reception on all remotes simultaneously), or the remote's circuit board has a failed component. We carry universal remotes compatible with most residential openers and can reprogram them to your existing logic board on the same visit.

The wall button works but the remote doesn't.

The wall button is hardwired directly to the logic board. The remote relies on the radio receiver in that same board. If one works and the other doesn't, the problem is in the radio receiver section of the logic board. On units under 12 years old, a replacement logic board ($115–$175, programmed to your existing remotes) is the right repair. On units past 15 years, full replacement often makes more sense.

The opener is getting louder — grinding, banging, or chain slap.

Chain drive openers are inherently noisier than belt drives. But increasing noise on a unit that ran quieter before is diagnostic information. Chain slap — a rhythmic banging through the full travel — is chain sag; the chain needs tensioning. Grinding near the motor head means the drive gear or worm shaft is wearing. Rattling specifically near the trolley carriage usually means the carriage spring clip has worn loose. Each has a targeted fix. None require full replacement unless the opener is old enough that the parts aren't available.