Two-minute triage
Look at the door and the opener lights, then match the symptom:
- Door looks straight, starts down, then reverses; opener lights flash. Almost always the photo-eye safety sensors near the floor. Chamberlain / LiftMaster say the lights flash 10 times for a sensor problem. Usually a DIY fix (next section).
- Lights flash twice and nothing moves. On Chamberlain / LiftMaster wall controls, that means the LOCK button is on. Turn it off.
- Door won’t close, lights don’t flash. Check for something blocking the door or jammed in the track or rail. Newer Security+ 2.0 units may beep and flash 5 times for an obstruction.
- Door is crooked, one side higher, rollers out of the track, gap between roller and track, or stuck partway. Off track. Pro job.
- A cable is hanging loose or frayed, or you heard a bang before it went crooked. Likely a snapped cable or broken spring that dropped one side. Pro job.
- Motor hums or runs but the door doesn’t move. Likely an opener issue (gear, trolley). See opener repair.
Sensor fix you can do yourself
The photo eyes sit on each side of the door, no more than about 6 inches off the floor. The door won’t close unless both glow steadily.
- Clear anything in the beam (bins, a broom, a bike tire, leaves).
- Wipe both lenses. Dust and cobwebs are a common cause.
- Check the LEDs. If the receiving eye (usually green) is off or flickering, loosen its wing nut, aim the two eyes at each other until the light holds steady, and tighten.
- Austin-specific: low afternoon sun shining straight into the receiving eye can blind it and make the door refuse to close at certain times of day. Chamberlain documents this; a small shield or flipping which side the sending eye is on can fix it.
- If an LED is completely dark, look for a cut, chewed, or loose wire (string trimmers are a frequent culprit). Wiring you’re unsure about is a call to a tech.
- After any adjustment, run the reversal test: lay a 2x4 flat under the door and close it. It must touch the board and reverse. If it doesn’t, don’t use the door until it’s fixed.
Older openers let you close the door by holding the wall button down. Chamberlain says units and replacement logic boards made after Feb 3, 2022 no longer do this, so don’t count on it.
Why doors come off the track
Local installers describe the same short list. A good tech fixes the cause, not just re-seats the door:
- Worn or seized roller pops out and pulls the door out of line.
- Bent or loose track from a car bump, stacked storage, or brackets loosening over time.
- Snapped lift cable or broken spring drops one side, and the door twists out of the track. Here the off-track door is a symptom.
Cost ballparks (cited, not our quotes)
These come from third-party guides and one Austin-area shop’s marketing page. Local Garage Door List did not measure them.
- Angi (national, 2026): track repair $5–$400 depending on the part; roller replacement $110–$230 with labor; new cables $100–$400 with labor; service-call fees $50–$75.
- GarageDoorEstimatorPros (national, 2026): track realignment about $125–$250; full off-track reset about $150–$350.
- Austin-area example: one Cedar Park installer’s site advertises off-track realignment “starting at $125.” That’s a floor, not a typical total.
Expect more if a cable, spring, or panel also needs work, or for after-hours calls. Get the total price before work starts.
Questions for the tech
- What made it come off: roller, track, cable, or spring?
- Are you re-seating the existing track or replacing sections? Which ones?
- Are cables being re-seated or replaced, and are both sides included?
- What’s the all-in total, including any trip or after-hours fee, and the warranty on parts and labor?
- Will you run a balance test and the 2x4 reversal test before you leave?
- Are you locally owned? (See lead-gen vs local.)
Watch for a jump from “off track” straight to “you need a new door.” A door that dropped can crease a panel, but ask to see the damage.
Local-owned shops to call
- Cedar Park Overhead Doors (named again in a Jan 2026 r/Austin repair thread)
- VIP Garage Door Services (recommended in a Dec 2025 r/Austin thread about misaligned sensors)
- The Up and Up Garage Doors
- Parrot Overhead Garage Doors
- South Austin Garage Door Repair and Systems
Reddit mentions are community signal, not our endorsement. Confirm ownership and pricing on the phone.
Also read: Spring repair · Opener repair · Austin hub
- Chamberlain Group support: opener lights blink but the door won’t close (10-flash sensor code, 2-flash lock, sunlight, post-2022 hold-to-close change)
- Chamberlain Group support: resolving a close error (obstruction, 5-flash on Security+ 2.0)
- LiftMaster video: door won’t close and lights flash (2x4 reversal test)
- Angi: garage door repair costs (2026 data)
- GarageDoorEstimatorPros: track repair cost (2026)
- Squared Away Garage Door Service (Cedar Park): off-track repair page (causes, “starting at $125”; marketing context, not a listing)
- Precision Door Austin: track and cable repair (don’t force an off-track door; marketing context, not a listing)
- r/Austin: garage door sensors misaligned, who do you call?
- r/Austin: any good garage door repair services in Austin? (Jan 2026)