Mechanical issue with an iMac

FWIW the iMac must be complete disassemble in order to replace the torsion spring.

Best bet, is to check with your local Apple Store or AASP to see if they have or can get the part to fix it.

https://locate.apple.com/

This is clipped from ***

"Simple solution: A rubber crutch tip placed between the monitor and the

stand holds the monitor position securely and can be very easily

adjusted in about 5 seconds. Cost: $0.29."

[Link edited by Moderator as following the procedures at the site may lead to damage to the user’s device]

I used an old chunk of dense foam. Seat cushion foam to be exact. Cut to fit with the angle I preferred.

There is a made for purpose solution available.

https://themachack.com/

Nice find Mal-S, thank for sharing that gadget.