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.

Repair garage door opener sensor.

If the line of the string isn t level adjust 1 or both garage door sensors by sliding the mounting bracket upward. Wiring issues the sensors are connected to the garage door opener with the help of low voltage wiring. If the green or red power indicator lights on the sensors are not illuminated you need to check the wiring. Connect the new safety sensor wires.

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. A garage door opener finally if nothing else works try replacing the units. On the garage door motor there will be two knobs or dials to adjust the opener and the reverse sensor.

Remove the wing nut from the safety sensor. This video takes you from my problem description to a successful repair all for under 24 00 u s. Disconnect the power cord from the outlet at the ceiling you will have to use a stepladder. The latest garage door sensors are technologically advanced and even allow you to control the opening and closing through an app on your smartphone.

My liftmaster garage door stopped closing the normal way. Use a step ladder to access the garage door opener s power cord and motor unit. Check that the line of the string is level. Refer to the owner s manual to determine which is.

Cycle the garage door through the opening and closing actions using the control on the garage wall. 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. Pull the sensor from the bracket. Adjust the garage door opener mechanism.

In most cases that will solve the problem but sometimes a bad circuit board in the main unit is responsible for non functional sensors.