Garage Door Opener Repair in Southlake, TX

When your garage door opener stops working, the problem usually is not the opener itself. It is one of several connected components. We diagnose opener problems in Southlake, TX and fix most of them the same day. Call us and we will walk through the symptoms with you before we even come out.

What is actually happening

The opener light flashes but nothing moves. The door goes up fine but will not come down, or it reverses before it reaches the floor. The remote stopped working but the wall button still does. The motor runs but the door does not move. These are distinct failure patterns and each one points somewhere specific.

The safety sensors are the most common cause of a door that won't close. Every opener installed after 1993 has them. They sit at the bottom of the door tracks, about six inches off the floor, one on each side. One sends a beam across the door opening and the other receives it. If anything blocks the beam, or if the sensors get knocked out of alignment, bumped by a broom, or covered in dust, the opener will not close the door. It reads this as an obstruction in the path.

You can check them yourself before calling. Look at the indicator lights on each sensor unit. One should be solid green, the other solid amber. If either is blinking or dim, the sensors are out of alignment or the beam is being interrupted. Wipe the lenses with a dry cloth and check that both units are pointed directly at each other. If that does not fix it, call us.

A blinking light pattern on the motor head unit is a diagnostic code. LiftMaster and Chamberlain units blink specific counts to indicate specific failures. A logic board failure blinks differently than a motor thermal overload, which blinks differently than a sensor fault. We know the codes for the brands we work with and can often narrow down the problem before we arrive.

What we check and in what order

Sensors first. We check alignment, lens condition, and wiring from the sensor back to the motor head. A sensor with a loose wire at the terminal will blink and fail intermittently, which makes it look like an electrical problem when it is just a loose connection.

Then the logic board. We look for burn marks, bulging capacitors, or the specific failure pattern that indicates a board that took a power surge. North Texas gets electrical storms regularly, and a nearby lightning strike can send a surge through the wiring in your garage and fry the logic board while leaving the motor itself intact. In that case, the board is replaceable as a separate part. We stock logic boards for the most common LiftMaster and Chamberlain models.

Then the drive system. The drive gear inside a belt-drive or chain-drive opener is a plastic gear that meshes with the motor shaft. After years of cycling it develops wear, and when the teeth strip, the motor runs but nothing moves. The gear kit is an inexpensive part and a straightforward repair. We also check the trolley carriage and drive belt or chain for wear.

Then the motor. If the motor is running hot, cutting out under load, or drawing too much current, that is a motor issue. At that point the question becomes whether repair or replacement makes more sense.

Repair or replace

If the opener is under 10 years old and the motor is working, repair almost always costs less than replacement. A new logic board and a drive gear kit are both relatively inexpensive parts. A full replacement unit, installed, costs considerably more depending on the drive type and horsepower.

If the opener is 15 years old and the motor is failing, replacement makes more sense. Older openers also lack safety features that are standard on current models, including better battery backup compatibility and rolling code technology that prevents remote cloning. We will tell you which direction makes sense before we start work. We do not push replacements on people with repairable units.

Brands we work with

LiftMaster and Chamberlain are products of the same parent company and share components across most models. We keep their most common logic boards, gear kits, capacitors, and safety sensor pairs in the truck.

For Genie units, we carry the most frequently needed parts. Genie uses different wiring conventions than Chamberlain Group products and its own sensor system, but the diagnostic process is the same. For Craftsman openers sold through Sears, the units were manufactured by Chamberlain or Genie depending on the year, so part availability varies by model.

Marantec and Overhead Door units are less common in the Southlake area but we work on them. Less-common parts may require a one-day lead time. We will tell you upfront if that applies to your unit.