I use 6 Mac computers in my business (nightclub) in often hot and smoky environments. The local Mac repair shop takes 2 weeks to fix anything. Got tired of being held hostage with a Mac down. Ifixit had the part, the tutorial videos, and the know how to help me do the job in around 10 minutes! And less than half the repair bill of the repair shop.
Exactly as planned.
Don't be intimidated about dismantling an iMac. Get the correct tools (the specific sized torx drivers are essential) and just follow the video instructions. Take your time! This repair was actually a lot of fun.