crwdns2915892:0crwdne2915892:0
Remove your midplane assembly to gain access to your display and front bezel.
crwdns2942213:0crwdne2942213:0
-
-
Lay the iMac display-side down on a flat surface.
-
Loosen the three Phillips screws securing the rear panel to the iMac.
-
-
-
Lift the rear panel slightly from the bottom edge of the iMac.
-
Pull the rear panel toward yourself and remove it from the iMac.
-
-
-
Remove the three 8 mm brass Phillips screws securing the optical drive to the midplane.
-
-
-
Lift the optical drive near the connector to separate it from the logic board.
-
Lift the free end of the optical drive slightly, then pull it away from the edge of the rear case to clear the two plastic positioning pins.
-
Lift the optical drive out of your iMac.
-
-
-
Slide the inverter-to-display cable connector from under the metal clip on the midplane.
-
-
-
Disconnect the inverter-to-display cable connector by pulling it straight away from its socket.
-
-
-
Remove the single Phillips screw securing the inverter to the logic board.
-
Lift the inverter straight up off the pins on the logic board.
-
-
-
-
De-route the inverter cable connector from the channel in the logic board.
-
-
-
Disconnect the inverter cable from the logic board by pulling it straight up from its socket.
-
-
-
Rotate the center Phillips screw on the bottom of the iMac clockwise until the rear panel clamp contacts the edge of the case.
-
-
crwdns2935267:0crwdne2935267:0Heavy-Duty Spudger$4.99
-
While depressing the connector lock, insert the flat end of a heavy duty spudger into the gap between the power supply connector and its socket.
-
Twist the heavy duty spudger to slightly separate the connector from its socket.
-
-
-
Pull the power supply connector straight away from its socket on the logic board.
-
This step is very simple if you remove the power supply first.
-
-
-
Remove the three Phillips screws securing the power supply to the chassis.
-
-
-
Grab the power supply from each side and rotate its top edge toward yourself until it clears the logic board.
-
Lift the power supply out of the midplane.
Bend the case at the rear panel clamp enough to clear the panel clamp while lifting out the power supply using the two captive screws as handles.
Rolling the power supply towards you while lifting using the captive screws helps get it past the captive back cover screw from step 4.
My replacement power supply did not come with an Ambient Light Sensor. I thought I had gotten the wrong one, but in fact the ALS comes easily off the old power supply (using a small flathead screwdriver to pry it off) and attaches to the new one.
-
-
-
Remove the two Phillips screws securing the fan cover to the midplane.
-
Lift the fan cover up off midplane.
-
-
-
Remove the two Phillips screws securing the display data cable to the logic board.
-
Using its black pull tab, pull the display data cable connector straight up off its socket on the logic board.
-
-
-
Remove the six Phillips screws securing the midplane to the front bezel.
-
-
-
Using its attached pull tab, lift the free edge of the midplane assembly slightly out of the front bezel.
-
-
-
Push the inverter-to-display cable connector through the hole in the midplane.
-
Lift the now-free midplane assembly out of the front bezel.
-
To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
crwdns2935221:0crwdne2935221:0
crwdns2935229:06crwdne2935229:0
crwdns2947410:01crwdne2947410:0
The picture on the far right for step 11 shows disconectting the ambient light sensor cable, not the power supply connector.
My iMac has only ONE catch, the central one, so the two outer screws are not to be touched.
In fact, I tried so hard to unscrew them, with a good screwdriver, that my hand hurt. Knowing that some times captive things (like these screws or a faucet) can be already at the end of their travel and we only lock them further into that position, I tried both screwing and unscrewing to no avail.
paulfrancoeur - crwdns2934203:0crwdne2934203:0
The two outer screws each drive a locking bar that engage tabs on the rear panel.
They definitely need to be unscrewed.
Dale Stanbrough -
That chick MJ is sexy!!!!!
djmadcracker - crwdns2934203:0crwdne2934203:0
Looks like one of these screws is not like the others... a security Philips?! Never seen one of those before.
Terry Mullane - crwdns2934203:0crwdne2934203:0
Please Note: If your iMac has an antenna for the airport extreme and not the bluetooth card. Don't buy the bluetooth get the airport extreme instead. Also, some newer devices may not work with these units.
James Janota - crwdns2934203:0crwdne2934203:0
Just want to say thank you to ifixit! You guys are amazing and so helpful! This was so easy to do and I ordered the part I needed as well! We are up and running over here and my 7 year old son could not be any happier! Thank you!
mary nicolazzo - crwdns2934203:0crwdne2934203:0
These are the easiest way to resolve the Wireless connectivity at my home. Thanks ifixit for sharing this.
Geek Squad - crwdns2934203:0crwdne2934203:0