How do I replace the stand hinge mechanism?
I need to know, from beginning to finish, how to replace the hinge mechanism on my iMac EMC 2546 (part #923-0313).
モデル番号A1419 / Late 2012 / 2.9 & 3.2 GHz Core i5 or 3.4 GHz Core i7 プロセッサ
OK, this is a VERY big job as most everything needs to be taken out to get to it!
If you haven't taken apart one of the newer "Thin Series" of iMac's I would recommend not even attempting it! This is were you should let Apple fix this as it will be cheaper in the long haul. Do you have an Apple Store near you? If you do I would bring it in, otherwise you may need to ship it to them.
But before we go forward here why do you think you need to replace this part?
Regarding the 2013 27" iMac, and it leaning forward as if it's been in captivity too long...
I have swapped the hinge mechanism on several 27" iMacs, all 2013.
Not to be confused with earlier models where you can insert a credit card in the back
to release the mechanism or any modified Vesa mount, the above models were just factory standard.
The issue is a really poor design, where 2 high tension metal springs are held in place by 2 plastic couplers. The cheap plastic couplers (if that's the correct term), eventually break, and the screen leans forward. Many users report hearing a loud crack when it breaks.
You can't adjust anything here. You can't tighten ANYTHING to fix it.
The temporary fix is to wedge some foam between the back of the display and the screen.
You have to purchase a new hinge assembly (see photo), it has the same cheap plastic couplers while the whole assembly is metal. I was unable to find just the couplers on their own, but a little imagination or a few episodes of MacGyver might help with some small washer ideas...
I attached 2 images.
• You can see that pretty much everything has to come out of the iMac to get to the hinge.
• The second photo shows the metal hinge, with the screw that holds the "coupler" in place. The high tension metal springs (1 each side) are held in place by the flimsy plastic couplers!
A new hinge assembly is approximately $80 -$100
Don't forget the adhesive strips for the screen
Hope that helps (and makes sense).
A simple fix-it is to place a rubber cane or crutch tip ( available from almost any pharmacy) between the stand and the body of the computer. It's even adjustable. And then proceed to give Apple !&&* for not making this endemic problem a recall. I had a 27 inch iMac , model 2007 for 8 years with never a hinge problem. With it's replacement a 2013 model the hinge broke after two years.
Your iMac could be covered under an Apple 'recall' repair:
According to a new internal service document, Apple will be offering refunds to customers who paid to repair or replace a faulty iMac hinge. In the service document, Apple admits that some 27-inch iMac models shipped between December 2012 and July 2014 may have been affected by an issue with the display hinge. It would not be able to support the weight of the screen, making it impossible to adjust because it just kept tilting forward. Apple sent the internal service document to Apple Authorized Service Providers, and it was then obtained by MacRumors.
The issue stems from Apple using plastic washers in the spring mechanism, which are not strong enough to support the weight of the display. Many customers affected by this issue have reported hearing a crack or a pop sound before the hinge stopped working, which can be attributed to the plastic washers breaking.
According to MacRumors, Apple will replace the weak spring mechanism on all eligible iMac models for free, regardless of warranty coverage. Just last September, Apple extended its hinge repair warranty program to cover 2012 and 2013 iMac models for five years, up from the original three-year period.
The impact on you: If your 27-inch iMac faced this issue and you paid for a replacement or repair, you may be eligible for a refund. You can contact Apple by phone or online to initiate the refund process.
In addition, if your iMac hinge is currently broken, you can get it replaced free of charge, regardless of your warranty. Start by booking an appointment with the Genius Bar at an Apple Store or by visiting an Apple Authorized Service Provider.
Forget the $250 repair job! Go to Lowes and purchase 2"x 4ft (1.2m x 5 cm) Velcro (Industrial Strength) with the "sticky back". Place two, 2 x 3 inch pieces (the non "fuzzy side" just below the Apple Logo, place, two, 2 x 3 inch pieces of the non "fuzzy side" on the upper part of the stand, just below the upper curve. Place two *" pieces of the "fuzzy side" (note don't peel of the sticky backing and bridge the upper and lower "non sticky" pieces. Adjust the monitor face as desired.
St. Marys, GA
What I have done was quick & simple.
I used a roll of elastic bandage left over from when I sprained my ankle. I carefully rolled it back up when I no longer needed it,
I took the roll, which has a slight tacky/grip to it, and placed it between the hinge & the computer back. I can adjust it by tilting the computer upwards & letting it rest on the roll.
Two dollars for a new one at the local drugstore, and you back in business.
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