I wanted to repair this myself to learn how to do it, and because i am not impressed with the apple store located in the Florida mall. The people that work there seem to have an attitude, and I do not trust them. Also, they wanted the password to my computer, I told them that was none of their business. If they were replacing the power supply they did not need the password. I told them this, and they acted like they were know it all's Also in the past they installed the incorrect memory in my imac, it did not boot, and they said there was a problem with the logic board. I took it home, replaced the memory myself, and it worked fine. I reaiized they were not as professional as they claim to be. When you try and discuss repair issues, they get this strange attitude I don't care for.
The repair went fine, followed the instructions exactly. The supplied suction cups and torx driver worked great. It took about one hour, everything went back together well. The only difficult part was connecting the small ribbon cable located at the upper left side behind the lcd panel. I used some tweezers to get the cable started in the slot, then pressed it in with my thumb. Its easy to damage this small ribbon cable, so I took extra time with it.
I would recommend having a helping hand when doing this job. It makes it easier to hold the imac rigid when removing or installing the parts.