Originally Posted by
pattern_is_full
Positioning in the video looks "close to" neutral. Not close to either stop. Unless it jammed there (and neutral was not the trim needed) or the whole unit broke loose from its mounts, that seems to minimize the odds of a THS jackscrew problem. (But you just never know).
In the photo, the jackscrew is resting on the actuator end and the broken-off stabilizer bracket. I don't think you can necessarily read too much into the position of the ballnut - if its threads had stripped and it was free to move up and down the screw then the photo could simply be showing how the assembly has been positioned on the floor.
On the other hand, we could be looking at a perfectly serviceable jackscrew. There just isn't enough definition in the photo to tell.