GARAGE DOORS SAN DIEGO • GARAGE DOOR REPAIR SAN DIEGO
24 Hour Emergency Garage Door Repair

Common Garage Door Opener Problems

Liftmaster:

Symptom: I can hear the motor running but garage door will not go up and down.
1. First check to see if3 your garage door trolley is engaged. Sounds silly but we've been out to check out some doors and it was a simple pull of the cord to re-engage the trolley to the motor.
2. If you have a chain-drive Liftmaster Motor and you hear a grinding sound it may be the plastic gears are stripped inside the motor. See Video Above.
If you have these replaced make sure both gears are replaced...the smaller one may not look worn but it is. Also make sure the garage door is balanced a heavy door is often the root problem of the stripped gear.

Symptom: Door Operator will not lift door or goes up a little then stops.

1. Before you do anything check the torsion springs above the garage door. If one of them is broken don't try to open the door....you could end up damaging the top panel of the door. Get both springs replaced.
2. If the springs are good....disengage the trolley try to lift the door by hand if it feels heavy you may need to have the spring tension adjusted. Or the garage door may feel like something is obstructing it on the way up.....then it may need some adjustments to the track.
3. So if the garage door torsion springs are good and the door goes up and down by hand with ease and with smoothness. Then look on your garage door opener for the force adjustment usually on a liftmaster or chamberlain there are 2 blue dials on the back or side. Turn the force adjustment up a tad ....then try the opening the garage door with the motor

Symptom: Garage door will not close.

1. Check the garage door safety beams make sure they are aligned and both lights are solid. move them around a bit...check the wiring to the beam move the wiring around a bit to see if there is a bad connection.
2. To know for sure if it is a beam problem Press and Hold down the wall button this overrides the garage door safety beams if it goes all the way when you hold it down then you know for sure its the beam.
3. If you move the beam around and you still can't get the lights solid check the wiring ....there may be a break in the wire such as a staple going through the wire or corrosion where the wire was spliced.
4. So if the beams are good....put the door on manuel by pulling the string on the trolley. Try to pull the door down by hand to make sure nothing is obstructing the door.
5. If the beams are good and the garage door runs down by hand silky smooth......then go to the force adjustment on the motor ..on the liftmaster its the 2 blue dials on the back or on the side on the motor case.. turn the force down up a tad ....then test the door

To be continued.....