What could be causing my garage door opener chain to not move?
This question is from Quora.
As of today, 2017-11-08, there were two answers.
Both were something along the lines of either there is no power or the gears are destroyed.
Actually there are many more answers.
1) Check to make sure the opener is getting power. Simply push the button and see if the light comes on.
If the light does not come on then check the power by plugging a light or fan into the socket.
Maybe it is as simple as a GFI or circuit breaker flipping.
However if you hear the motor turning skip to step 5.
2) If it is getting power then disconnect the door and then see if the chain will move.
Maybe you have a broken torsion spring or the door is too heavy.
3) If the chain still doesn't move check the force settings on the motor head.
Those are the two blue screws.
Turn them to clockwise to max and try again.
If this fixes the problem then oil the door and turn the screws back down until it no longer opens and closes and then turn 1/8th back up.
4) Is the carriage all the way to one end or the other and bound up tight?
If the carriage is pushing against the bolts at either end then it's bound up tight and stuck.
You've got to loosen the chain and possibly reposition it so the trolley is no longer locked in place.
Then set the force adjustments to zero and play with the travel limits so you don't lock it up again by mistake.
5) Has the sprocket snapped or the gears inside become stripped?
If you hear the motor turning there is a good chance the gears need to be replaced.
Take the cover off the motor.
They all use 1/4" heads.
You may see a lot of white dust fall out so keep it away from your head.
Then run the motor.
Do you see it turning yet the gears are stripped and not turning.
Replace the gears...
Use the grease supplied in the kit or you'll soon have more stripped gears.
I wrote this post on 2017-11-08.