Make sure that the antenna on the motor unit is hanging downward and is not damaged in any way.
Garage door opener logic board troubleshooting.
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.
A power surge due to lightening or a power outage in the house can damage the boards.
Unplug the garage door opener and check the wiring connections on the panel.
Take the garage door opener down.
Remove sensors from brackets and shorten sensor wires to 1 2 ft.
If you re too far away this can cause a problem with opening or closing the door.
If the wiring connections are okay wait a few minutes before plugging the garage door opener back in disconnecting the power resets the logic board after an electrical disturbance.
Firstly check that you re using it within the range required for your opener.
You can repair the circuit board so that your garage door opener can again properly function.
Step 1 remove the portion of the garage door opener that holds the controls from your garage s ceiling.
The main drive gear is the plastic gear that comes in direct contact with the worm drive gear on the motor.
Also verify the antenna on the motor unit is in the proper placement.
Common problems experienced with garage door openers are often due to a faulty logic board.
Remove the logic board.
Then test whether the opener works.
If you just want to get a new board and forget the repair you can get a new one on amazon http amzn to 2y1mabw in my last garage door repair video a ye.
If the light does not come on when the door opens or go off when it closes the problem could be the logic board.
Garage door opener won t open all the way fix.
30 60 cm from back each of sensor.
Disconnect all wires from back of garage door opener.
Use a step ladder to access the garage door opener s power cord and motor unit.
Here is a brief trouble shooting guide.
If you need to install a new system or replace a broke or failing circuit board liftmaster has a wide range of garage door logic board products to help fix any issues.
You may also need to reprogram your keypad or replace the batteries in it.
Reattach sending sensor to garage door opener using shortened wires.
Modern garage door openers are essentially small radios that operate at about 315mh and a few feet of extra distance can affect the signal.
