Those are the two blue screws.
Garage door chain stopped moving.
This causes the motor to run for an extensive period of time before it seems to timeout and give up.
Press the remote or the wall mounted start switch listen to the motor and watch the movement of the chain.
3 if the chain still doesn t move check the force settings on the motor head.
In order to fix this you ll want to make small changes to the close limit setting until the door opener knows to stop once the door has reached the floor.
Troubleshooting your chain drive garage door opener is easily done by following a few steps.
This excess tension causes the gear that moves the chain to grind down.
Squeaky garage door or garage door grinding sound when opening or closing if you hear a garage door grinding noise it could be the rollers.
I ve not worked on garage doors before but i have a degree in computer electrical engineering.
Always look for loose hardware before you start checking out any other problems that might be associated with your chain drive garage door opener begin looking at the various nuts and bolts on the unit.
Turn them to clockwise to max and try again.
The chain and door connector assembly haven t budged since.
Maybe you have a broken torsion spring or the door is too heavy.
If the motor hums but the chain doesn t move that indicates a problem with the motor.
The door track rollers move each time you open or close the door leading to a lot of movement and causing wear.
2 if it is getting power then disconnect the door and then see if the chain will move.
If the gear becomes too worn it will no longer be able to move the chain.
This wear could damage the roller surface causing them not to roll correctly.
If your garage door is closing fully and then reversing to open again then it may be due to a problem with the close limit switch.
If this is the case the motor will run but as the chain isn t where it should be it can t generate the lift to open the door.
There s something wrong with the garage door opener that s stopping it from opening the door for you.