Electronics Repair Questions? Ask an Electronics Technician
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It sounds as if the door may have slammed shut owing to an insensitive door-closed sensor.
That might have (at worst, but by the sound of it) damaged the door a trifle. It might indeed be hard to get it open for tomorrow's work.
Now, when you crank it open by hand, how far open does it get, from a closed position, before the door stops cranking and resists further opening (do not force it... that could damage it worse. Perhaps... let's be cautious for now...) ?
There is always a crank to crank up a garage door by hand.
Don't try lifting it yourself!
Look for a crank on the opener, perhaps.
Or, on either side of the door, where it goes in its track along the wall.
Try cranking open the door. If it doesn't 'bind' or resist distinctly at any point, and you get it open, then all's well enough for your getting to work tomorrow... let me know how it goes.
Look carefully. Getting to work tomorrow depends on it.
Which light is red, and blinking, on your opener, please?
Release the door, and then try to pull it open manually. That might work... but don't force it.
That might be padding that got into the track.
Is there any such padding anywhere else along the track that the door rides on/in ?
If not, it's non-essential, it's good that you spotted it, and remove it - without tearing it, though - and see if that helps.
Move the belt into the best position to remove it, then pull it out, is my advice. But you can follow the YouTube vid. if you wish to.
Then don't! sounds unsafe to your fingers.
Perhaps you need to call Sears Home Services, their garage door opener division. ?
It sounds as if I cannot help you further... I regret that.
Would you like to ask me about anything else about this problem?
OR would you prefer to have a chance at another Expert's opinion, at no extra charge?
I don't think you'll be charged if no-one here can help you.
As for Sears Home Services... ask them about their charges, and describe your problem.
(I don't know your region... or I'd cite their phone #.)
I have Opted Out, in case another Expert here can help better than I did.