Repair Garage Door Opener Sensor

Cycle the garage door through the opening and closing actions using the control on the garage wall.

Repair garage door opener sensor.

The main drive gear is the plastic gear that comes in direct contact with the worm drive gear on the motor. If the line of the string isn t level adjust 1 or both garage door sensors by sliding the mounting bracket upward. Disconnect the power cord from the outlet at the ceiling you will have to use a stepladder. In most cases that will solve the problem but sometimes a bad circuit board in the main unit is responsible for non functional sensors.

Adjust the garage door opener mechanism. Use a step ladder to access the garage door opener s power cord and motor unit. If the green or red power indicator lights on the sensors are not illuminated you need to check the wiring. Refer to the owner s manual to determine which is.

Sometimes the sensor may be beyond repair due to wear and tear and in such a case your best bet is to replace the garage door sensor with a new one. The latest garage door sensors are technologically advanced and even allow you to control the opening and closing through an app on your smartphone. Remove any debris dust or cobwebs from the electric eye lenses on each sensor with a clean rag. Lay a level so the bottom runs along the string.

This video takes you from my problem description to a successful repair all for under 24 00 u s. Continue until the sensors are once again level. Pull the sensor from the bracket. My liftmaster garage door stopped closing the normal way.

Connect the new safety sensor wires. Garage door opener won t open all the way fix. Check that the line of the string is level. A garage door opener finally if nothing else works try replacing the units.

Replace the main gear drive if the garage door opener makes a grinding noise but the door doesn t move your main drive gear is probably toast.