Garage Door Opener Repair in Smithtown, NY
Opener hums but the door doesn't move? Door goes up but won't close? Remote quit? We repair LiftMaster, Chamberlain, Genie, Craftsman and Linear openers across the Town of Smithtown, with sensors, gears, boards and remotes on the truck. Sensor realignment from $95.
What is the most common garage door opener problem? Misaligned or dirty safety sensors — the door opens but won't close, or the opener light blinks. Wipe both lenses and check that the small lights on each sensor are steady. If that doesn't fix it, realignment starts at $95 and a new pair at $185.
Troubleshoot Before You Call
A lot of opener calls end on the phone, because the problem turned out to be one of these. Try them in order:
- Power. Is the opener's light on? Check the outlet on the ceiling and the breaker. GFCI outlets in garages trip easily.
- Lock mode. Many wall controls have a lock or vacation button that disables the remotes. The wall button still works when it's on.
- Sensors. Look at the two small sensors a few inches off the floor. Each has a light; if one is blinking or off, they're out of line or dirty. Wipe the lenses and nudge them until both lights are steady.
- Remote battery. If the wall button works and the remote doesn't, start with the battery.
- Manual release. If someone pulled the red cord, the opener is disconnected. Run the opener once and it should re-engage — but only if the door is balanced and the springs are intact.
Still stuck? Call (631) 881-8120. Tell us the brand and what the opener's light is doing; many models blink a code.
Opener Repair Prices
| Service | From |
|---|---|
| Travel / limit recalibration | from$95 |
| Safety sensors, realign | from$95 |
| Safety sensors, new pair | from$185 |
| Motor capacitor For an opener that hums but won't start | from$105 |
| Logic board / receiver | from$185 |
| Gear and sprocket kit | from$235 |
| Trolley | from$135 |
| Belt or chain slack adjustment | from$140 |
| Wall control | from$135 |
| Remote, LiftMaster 893MAX | from$99 |
| Keypad, LiftMaster 878MAX | from$159 |
| Remote or car HomeLink programming | from$105 |
Every price on this site is a starting price. The final price depends on the door, the parts and the work needed, and you get it in writing before any work begins. The $45 service call is only charged if no repair is done. Sunday emergency calls add $45.
Symptoms and What Usually Causes Them
Motor hums, door doesn't move
On a chain or belt opener, often a stripped plastic drive gear — very common on older LiftMaster and Chamberlain units. It can also be a bad capacitor, or a broken spring making the door too heavy. Never keep pressing the button; you'll burn out the motor.
Door opens a few inches, then stops or reverses
Usually the door is out of balance — weak or broken springs — and the opener senses too much force. Sometimes the force settings simply need adjusting.
Opener runs, door stays put
The trolley is disconnected (manual release), the chain or belt has come off the sprocket, or the trolley is broken.
Works from the wall, not the remote
Battery, lock mode, a remote that lost its programming, or a failing receiver on the logic board.
Door closes, then goes right back up
Sensors, or the close limit set too low so the door hits the floor and thinks it hit an obstacle.
Opener starts on its own
A stuck wall button, a shorted wall wire, or a remote programmed long ago that someone still has. We can clear the memory and re-program your remotes.
Lights blink and nothing works
Many LiftMaster and Chamberlain openers flash a diagnostic code with the up-and-down arrows or the light. Count the flashes and tell us when you call.
Very loud
Loose chain, worn rail, dry door hardware. See noisy door repair.
When a New Opener Is the Better Buy
We don't push new openers. But there are times we'll recommend one:
- The opener is 15 to 20 years old or more and has already had a gear or board replaced.
- It was installed before photo-eye safety sensors were required.
- It's a loud chain drive in a garage under a bedroom.
- You lose power often and want a battery backup that the old unit can't take.
- The repair would be more than about half the cost of a new opener.
New openers installed start at $535, and our $75-off coupon applies. See opener installation.
Check the Door Before Blaming the Opener
An opener is designed to move a balanced door, not to lift its weight. If the springs are weak or broken, even a new opener will strain, reverse and eventually fail. That is why our opener repairs start by pulling the release and lifting the door by hand: if it won't stay halfway up on its own, the springs come first.
It's a quick test you can do yourself, with the door closed: pull the red release cord, lift the door to about waist height and let go gently. If it slides down or shoots up, call us before you replace the opener.
Garage Door Opener Repair Questions
Straight answers with our starting prices. Last updated October 2026.
Why won't my garage door opener work?
Start with the simple things: the opener is plugged in and the breaker is on, the wall control isn't on lock, the sensors at the bottom of the tracks are lined up and clean, and the remote has a fresh battery. If the motor hums but nothing moves, the gear may be stripped or a spring may be broken.
Why does my garage door open but not close?
Almost always it's the safety sensors. If the two small eyes at the bottom of the tracks are blocked, dirty, knocked out of line or the wire is damaged, the opener refuses to close the door. Realigning sensors starts at $95; a new pair starts at $185.
How much does garage door opener repair cost?
Common opener repairs start at $95 for travel and limit settings, $105 for a capacitor, $185 for a logic board and $235 for a gear and sprocket kit. If the repair would cost close to a new opener, we'll say so.
Should I repair or replace my garage door opener?
Repair it if it's a decent opener with one failed part. Replace it if it is around 15 years old or more, lacks modern safety sensors, is a loud chain drive under a bedroom, or the repair is more than about half the price of a new one. New LiftMaster openers installed start at $535.
Why does my garage door reverse before it hits the floor?
The opener thinks it hit something. Common causes are a close-force setting that is too sensitive, travel limits set too low, a sensor that flickers, or a door that has become heavier because its springs are weak. We test the door's balance before we touch the opener's settings.
Do you repair LiftMaster and Genie openers?
Yes. We repair LiftMaster, Chamberlain, Craftsman, Genie and Linear openers, plus most other brands found in Long Island garages, and we carry the common gears, boards, capacitors, sensors and remotes on the truck.