1 - 2 часы
I hear a sound behind the screen. A powerful sizzling ... I know that noise is the sound of a dead power supply.
I followed step by step the tutorial with the right tools. And I did not encounter any major problems.
Oh yes ... Do this in a very very clean place, with clean hands and a vacuum dust cleaner. It's not worth paying hundreds of dollars in an Apple Store, if you are not too stupid, all will be fine
Heavy-Duty Suction Cups (Pair)
TR10 Torx Security Screwdriver
iMac Intel 27" EMC 2309, 2374, 2390 or 2429 Power Supply