[retiredguy123]

Originally Posted by Keefelane66

Sometimes you must think out of the box. In a pinch it will work have done this before and someday I’ll probably need to do it again.
https://m.youtube.com/watch?v=q7sTl51uCJA

I agree that you can operate a door with only one spring "in a pinch". But, I would not depend on one spring as a long term solution. A friend who has an older house had one spring break, and the door would not budge with the motor or manually. When I had a spring break, the motor would still open the door, but is was slow and noisy and I think it really put extra work on the motor. I had both springs replaced immediately.