I’ve had a question for you I’ve had GFCIs that will fall at the induction and not reset, that’s kind of normal. However during routine pressure testing of a garage door the door crumpled in the middle. The tension is too high and the garage door has been hacked before. But now I just caused considerable damage. What do you do in that situation?
First, I would not have operated the door if it was damaged. Now you have to repair/replace the damage section (s).
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There’s many posts about this very issue on this MB. Sounds like you may have bought a garage door…
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This post here will answer all of your questions…
https://forum.nachi.org/t/damage-to-a-garage-door-while-inspecting/199268/50
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We surveyed 10 inspectors in which 15 said:
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Some learn the hard way.
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Sorry
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You’re not supposed to hold it until it collapses on itself 
Live & learn, sh*t happens.
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I Immediately offered to pay to make it right. Just curious what others thought. It damaged at less than normal recoil pressure.
How did you calculate this?
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Never knew garage doors had recoil 
Sounds like a gun enthusiast 
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That was a good move for sure. Don’t feel too bad, it has happened to many inspectors over the years. The general consensus now seems to be either do not do the pressure test, or do it strictly per the manufactures specifications and record the whole thing. For myself, I do not perform a pressure test and I disclaim that mechanism in my report stating the risk of damage is too great.
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You got it!
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I quit doing the force sensor testing because it should be calculated on the motor when installed by a professional. If not calculated properly, it’s going to cause damage at some point and it’s not up to us to determine that was properly calculated.
Although, interNACHI instructional videos include it in a “how to” , I dismiss and disclaim it for the reasons stated above.
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Pay for the repair, and never do another pressure test on a garage door.
Then - live long and prosper. 
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Not sure what signs you had that the door was hacked prior to your pressure check. I assume by pressure check you mean letting the door strike a 2x4 or similar obstruction.
I f the door has sensors ( properly Installed) I never use the pressure check just for this reason, Yea Yea SOP says to but SOP don’t pay for damage I do.
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We have all had to learn this the hard way it’s just your turn don’t worry about it a lot of this don’t do that test anymore it is just simply not worth it I try to have the garage door fail at other junctures so that I can write it up and let someone else do that
So… the question that never gets asked or answered is…
WHICH Manufacturer? The Opener or the Door??
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Even better solution jonas