Repair Garage Door Opener Sensor

Garage door opener won t open all the way fix.

Repair garage door opener sensor.

On the garage door motor there will be two knobs or dials to adjust the opener and the reverse sensor. Use a step ladder to access the garage door opener s power cord and motor unit. In most cases that will solve the problem but sometimes a bad circuit board in the main unit is responsible for non functional sensors. Refer to the owner s manual to determine which is.

Check that the line of the string is level. 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. Cycle the garage door through the opening and closing actions using the control on the garage wall. Pull the sensor from the bracket.

My liftmaster garage door stopped closing the normal way. If the green or red power indicator lights on the sensors are not illuminated you need to check the wiring. Remove the wing nut from the safety sensor. 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. If the line of the string isn t level adjust 1 or both garage door sensors by sliding the mounting bracket upward. Remove any debris dust or cobwebs from the electric eye lenses on each sensor with a clean rag. Disconnect the power cord from the outlet at the ceiling you will have to use a stepladder.

Adjust the garage door opener mechanism. The main drive gear is the plastic gear that comes in direct contact with the worm drive gear on the motor. Connect the new safety sensor wires. Continue until the sensors are once again level.

Wiring issues the sensors are connected to the garage door opener with the help of low voltage wiring.