I had the same issue on my Beocenter 7007 turntable hinge that was continuously falling like described in this archived thread: /forum/imported-unmapped/beocenter-7000-turntable-cover-hinge-plus-a-dumber-question
It’s not a question that I have but more an answer to those looking for a solution, hence I’m launching this topic for the record.
I made a 3D model that you can print to address this issue:
https://www.thingiverse.com/thing:6794011
It’s not too difficult to assemble everything back together but you need to be cautious and not focus too much on the spring.
Hope this helps!