5 - 10 minuten
The fan was beginning to make a screeching racket and the mac case was getting hotter than it ever had before, then it went quiet and made no noise! So after conferring with a friendMacGuru I presumed that at least the fan could do with replacement immediately lest I need to replace the lot imminently!
Friend sent link to iFixit page for actual process on actual model computer. I was shocked at the images and detail in text that were there to guide you through the process, in addition to click links for ordering the required part. I placed the order on a Thurs afternoon. The consignment was transported from California USA and delivered to me in Perth on the West Coast of Australia on the following Tuesday morning.
How good is that!?
How could a service possibly be better?!
Installation was very easy and straight forward.
It was not clear in the text, for how to get the fan unplugged from the circuit board. After taking photos of the plug and socket then enlarging them, I was able to work out that;
The plug must be removed in direction precisely vertical from the board.
I ended up using a small flat screw driver to prise it upwards from the board (try and use a non conductive version of....?, credit card did not work for me).
When plugging in the new fan, the plug slides down vertically over the recipient socket in the same way that it came off. The 4 line slots that run to edge of plug casing must go face down so as to fit snugly onto the 4 projecting prongs of the circuit board mounted socket. The plug is so small that it is difficult to see which side is the correct one to install face down.