Full 25-point door and opener safety check with every visit - springs, cables, rollers, tracks, and your LiftMaster or Chamberlain opener included
You get a price before we start. It does not change when the truck arrives.
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After
Before
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Before
AfterSensor Calibration in Marietta, GA
Sensor calibration for residential garage doors in Marietta, GA, typically costs between $85 and $145. This service covers the alignment of safety eyes, cleaning of lenses, and verification of the logic board to ensure the door reverses properly when an obstruction is detected. If the sensors are damaged or the wiring requires replacement, the cost will adjust based on the specific parts needed, but we always provide a written, flat-price scope before any work begins.
When your garage door starts acting erratically, such as reversing before it hits the floor or refusing to close entirely, the problem often lies with the safety sensors. These components, mandated by federal law, are the infrared eyes mounted at the base of your door tracks. If they are out of alignment, dirty, or damaged, the opener assumes there is an obstruction in the path of the door and prevents it from closing. At Servo Garage Doors Marietta, we specialize in diagnosing these specific failures with precision. As an independently owned business operating under The Haven Standard, we prioritize a documented, evidence-based approach to every repair. Whether you live in a historic home near Marietta Square or a modern build in East Cobb, our technicians arrive equipped to test, align, and restore your system to factory specifications. If you need broader maintenance beyond the sensors, we provide comprehensive Garage Door Repair services to keep your system functioning safely.
When You Need Sensor Calibration
You may not always know if a sensor needs calibration or if the opener itself is failing. We look for specific physical indicators that tell us where the fault lies. If you notice any of these symptoms, call (470) 486-7771 to have a technician inspect the system.
- The door reverses immediately upon closing: This is the most common symptom. The opener sends a signal to the sensors, receives no response or a broken signal, and automatically reverses the door to prevent a potential accident.
- The status light on the opener is blinking: Most modern openers, such as LiftMaster or Chamberlain models, use a diagnostic LED light system. If the light flashes in a specific pattern, it often indicates a sensor communication error.
- Sunlight interference: In some Marietta neighborhoods with south-facing garages, direct sunlight can hit the receiving sensor and overwhelm the infrared beam. If your door only fails to close at certain times of the day, calibration or shielding may be necessary.
- Physical obstruction or damage: A stray bicycle, garden tool, or even a shifting garage floor can knock a sensor out of alignment by a fraction of an inch. Even a slight tilt prevents the beam from making a clean connection.
- Erratic behavior during rain or high humidity: Georgia humidity can sometimes cause corrosion on the low-voltage wires connected to the sensors. If your door works inconsistently during wet weather, the wire connections often need inspection and cleaning.
- The door only closes when you hold the wall button: This is a manual override mode. The system is telling you that the safety eyes are not communicating properly, and it will only close if it senses an active human presence.
Our Sensor Calibration Process
We do not guess at the problem. We follow a specific, documented process to ensure the fix is permanent. This is part of our commitment to The Haven Standard, which requires that we verify the failure before we offer a solution. You can learn more about our general approach on our home page.
- Visual Inspection: The technician first inspects the sensors for physical damage, cracked lenses, or frayed wiring. We photograph the condition of the sensors exactly as we found them, which becomes part of your documented service record.
- Alignment Check: Using a laser level or a standard alignment tool, we verify that the sending and receiving sensors are perfectly parallel. Even a slight deviation in an older home with a settling foundation can break the beam.
- Cleaning: We clean the lenses of both the sending and receiving sensors. Dust, spiderwebs, and pollen are common in the Marietta climate and can easily block the infrared signal.
- Wiring Continuity Test: We test the low-voltage wires at the sensor and at the motor head. If we find corrosion or a broken wire, we document the damage before proposing a repair.
- System Testing: Once aligned, we perform multiple test cycles. We verify the door reverses immediately when an object is placed in the path of the beam, ensuring the safety system is active and responsive.
- Documentation: Per Clause 4 of The Haven Standard, we provide you with a photo record of the findings and the completed work. You see exactly what we did before you pay.
BeforeAfterSensor Calibration Pricing in Marietta
We believe in upfront pricing. We do not use “call for a quote” tactics. You deserve to know the cost before we start. The following ranges reflect the market rates in the Marietta area for professional sensor service.
| Service Type | Price Range |
|---|---|
| Sensor Alignment & Cleaning | $85 – $110 |
| Sensor Wire Repair (per wire) | $95 – $130 |
| Sensor Replacement (Standard Model) | $125 – $175 |
| Logic Board Diagnostics | $90 – $140 |
These prices include the labor and the documented photo record provided with every visit. We offer free estimates for all repairs. If you have a written estimate from another company, bring it to us. We provide a free second opinion, and we will honor the price if the scope is equivalent. Call (470) 486-7771 to schedule your appointment.
Safety and the Logic Board
A note on safety: While cleaning sensors is a simple task, the sensors are connected to the garage door opener’s logic board via low-voltage wiring. This board controls the high-voltage motor. If you notice signs of electrical burning, smell smoke, or see charring on the circuit board, do not touch the unit. This is a fire hazard. Our technicians are trained to handle high-voltage electrical components safely. If your system is showing signs of electrical failure, we will photograph the board, explain the risk, and provide a written scope for the necessary repairs. We recommend avoiding DIY attempts if you are unsure about the electrical integrity of your opener.
FAQs - Sensor Calibration
Can I fix misaligned sensors myself?
You can often fix a simple alignment issue by loosening the wing nut on the sensor bracket and adjusting it until the LED light on the sensor turns solid, but you must be careful not to overtighten the bracket or damage the plastic housing. If the sensors do not respond after a gentle adjustment, or if the wiring appears damaged, avoid forcing the components, as this can lead to more expensive cable repairs or other damage. Call (470) 486-7771 if you need a professional to verify the alignment.
Why does my garage door close, then immediately reverse, even when nothing is in the way?
The most likely cause is a faulty communication between the sensors, which can be caused by a bad wire, a failing logic board, or a sensor that has developed an internal fault. The system thinks there is an obstruction because the infrared beam is flickering or failing to complete the circuit. We use a multimeter to test the voltage at the sensors to determine if the issue is the sensor itself or the wiring leading back to the opener.
Do you service all brands of garage door openers?
Yes, we provide service for all eight major brands, including LiftMaster, Chamberlain, Genie, Clopay, Amarr, Wayne Dalton, Craftsman, and Raynor. Because we are independently owned and operated under The Haven Standard, we are not tied to any single manufacturer, which allows us to source the correct parts for your specific model.
How long does a sensor calibration take?
A standard sensor alignment and cleaning typically takes between 30 and 60 minutes, depending on the accessibility of the wiring, the condition of the mountings, and whether any track realignment is needed. We prioritize efficiency, but we never rush a job; we ensure the safety system is fully tested and documented before we consider the work complete. Call (470) 486-7771 to get an exact quote for your specific setup.
Our team is ready to help you restore the safety and functionality of your garage door system, including any needed spring repair. We bring a documented, transparent approach to every job in Marietta. Call (470) 486-7771 for a free estimate and to see how we handle garage door service differently.
Written by Marcus Deller, Owner at Servo Garage Doors Marietta, serving Marietta.