Einleitung
Diese Anleitung zeigt dir, wie du das Netzteil austauschen kannst.
Was du brauchst
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Wenn du die iFixit-Reparaturhilfe aus Karton verwendest, dann baue sie zuerst mit Hilfe dieser Anleitung zusammen.
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Bevor du beginnst an deinem iMac zu arbeiten: Ziehe den Netzstecker, drücke und halte den Ausschaltknopf für mindestens zehn Sekunden. Dadurch werden die Kondensatoren im Netzteil entladen.
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Setze das iMac Opening Tool an der linken Seite des Displays, in der Nähe des An/Aus Schalters beginnend, in die Spalte zwischen Glaspanel und Rückgehäuse ein.
Don’t get too worried about starting exactly where the picture says. The glue is stronger in some parts so just start wherever is easier and then work slowly and patiently around in the direction shown.
As this guide doesn’t cover replacing the adhesive strips, I found referring to the following was useful (noting that it’s not for the same model of iMac, so the modification they mention wasn’t necessary): IMac Intel 21.5 "EMC 2544 Klebestreifen ersetzen
This part of the exercise should be done with extreme patience. I took my sweet time with the opening tool, rolling it through the entire panel and enclosure gap over and over again, until I was very sure no parts were sticking together anymore. And when I thought I was I done, I decided to do it over again.
You can "warm up" the adhesive before try to cut it with the tool using a hair dryer. Heat the edges for about a minute, keep moving it so you don't cause stress in the glass. Also the above note.. use the tool and then the cards. Do not use a guitar pick or other objects as the thickness will cause you to break the front glass, which is a bonded part of the display (expensive).
Merci pour ce conseil
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Benutze es wie einen Pizzaschneider - Rolle es entlang des Spalts und trenne dabei den Klebeschaum in der Mitte.
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Lasse das Werkzeug die linke Seite des Displays entlang laufen.
If re-opening a screen that was opened and re-attached using iFixit’s adhesive strips, I would strongly recommend heating it first with an iOpener, heat gun or hair dryer. 20 minutes after attaching with the iFixit adhesive I tried to open it again with the pizza slicer to fix something and cracked the screen on the left-hand side.
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Fahre fort und lasse das Werkzeug um die obere linke Ecke laufen.
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Fahre an der Oberseite des Displays fort.
In this step can I cut along the display without make any damage to the front camera?
Hi! Actually - there is no need to cut the tape around the camera area - there is no tape to cut at all! And so, the way go is easy - just pass 10 mm to the left and to the right from camera and start cutting!
P.S. Just did the whole procedure to replace a RAM and to add SSD on PSIe an hour ago! Seems to be different reading the instructions... you know - 2/10 and so on. But it's really not that hard, trust me. I'll give it 5/10.
P.P.S. By the way there is one trick to pass the difficult steps. Any action which requires pulling smth (motherboard, speaker, power supply unit) from the narrow crack (or should i say - slit?) at the bottom of your Imac is really not so easy.
And the trick is to first remove a thin metal stripe with some kind of insulation on it which held by 5 small (very small!!) screws at the bottom of your Imac. After you done it - it's easy to pull everything! Pay attention to the fact that one of this 5 screws at the center are more shortly than others.
If you're changing cracked EMC 2638 display to new assembly, there's two more steps:
Step 24: Use the tip of a spudger to flip up the metal retaining bracket on the display data cable.
Carefully pull the display data cable from its socket on the display assembly.
Step 25: Use the tip of a spudger to unplug bracket of the thermal sensor small cable near display data cable.
Carefully remove scotch tape covering thermal sensor. Using iSesamo or flat tip of the spudger carefully peel the thermal sensor away.
omg - forgot to switch the termal sensor from the old display...
now fan runs like crazy...
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Beende das Schneiden mit dem iMac Opening Tool unten auf der rechten Seite des Displays.
Yes, do it many times to loosen the adhesive.
Would be good data to show the 3 areas (wifi antennas where the "tape" is larger and covers them. The rest of the "tape" is 1.4" and easy. Also after removing the display, be sure to remove the old "tape" from both the display and the rubber parts of the case. Use the spudger to start an end and it should pull off easily. Careful on the baackside of the display as you can scratch off the black paint/covering.
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Beginne in der oberen rechten Ecke und zwänge eine Kunststoffkarte zwischen Display und Rahmen.
this step is extremely important NOT to stick in the cards too far….. doing so, you risk a 600 euro replacement as I experienced………
I drew a 3/8” line on my cards with a marker first.
I’m reading this on the EU store, please change all measurements to cm/mm.
@ifixit The next batch of cards you create should have a line printed on the card 3/8” in from the edges. Would make a nice reference.
Better to remove stand wedge at this point? Can’t see from pics
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Verdrehe die Plastikkarte seitlich und vergrößere so den Spalt zwischen Display und Rahmen.
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Bewege die Karte vorsichtig und langsam, damit das Displayglas nicht zu stark belastet wird - du brauchst nur einen Spalt von etwa 6 mm Breite zu öffnen.
This part must be done very carefully or you can damage the flat cable from display, despite it was under a iron cover.
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Schiebe die Karte zur Mitte des Displays hin und schneide so allen Kleber an der rechten oberen Ecke des iMac auf.
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Zwänge die Plastikkarte erneut in die obere rechte Ecke ein und lasse sie dort stecken. Damit verhinderst du, dass sich die Teile wieder verkleben.
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Setze eine zweite Plastikkarte an der oberen linken Ecke des iMac in den Spalt zwischen Rahmen und Display ein.
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Verdrehe die Karte nach oben, vergrößerte so den Spalt zwischen Rahmen und Display ein wenig.
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Fahre mit der Karte zur Mitte hin, halte auch hier wieder vor der iSight Kamera an
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Verdrehe nun beide Karten seitlich, wie im Bild zu sehen an den Ecken eingesetzt, und vergrößere den Spalt zwischen Gehäuse und Display.
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Fange an, die Oberkante des Displays vom Rahmen weg zu heben.
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Während du das Display mit einer Hand nach oben hältst, trenne mit der anderen Hand das Stromkabel des Displays.
I had a small flight light ready so I could see. Follow the directions - don’t blindly pull.
Head lamp gives you the best hands free view!
bstaud - The display power cable has two squeezable levers on each end of the cable’s width.
Squeeze the left lever with your thumb while you simultaneously squeeze the right lever with your
index finger, and gently pull the cable straight back and out, and the cable comes out very easily.
When reassembling, make sure you get a “click” confirmation that both the levers have locked AND the pins have seated on this connector. I was treated to a black screen upon startup, and had to re-cut my newly installed adhesive strips to get back in to firm up this connection. Better would be power up with the bottom adhesive in place, screen resting in place and held on top with blue painter tape to confirm connections, THEN pull off screen-side adhesive tape covers for final re-bonding.
Can someone post a link to actually purchase these cables?
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Klappe die Metalllasche am Anschluss des Display-Datenkabels mit einem Spudger hoch.
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Ziehe das Display-Datenkabel vorsichtig aus seinem Sockel auf dem Logic Board.
Sure could use a magnified picture of this connector and socket, especially the first time you go in. And it is the most critical step of the whole operation — bung it up and we’re toast.
Hi bstaud! If you hover over the image you can click on the magnifying glass and get a large image of any guide photo. Hope that helps!
To clarify, the connector pulls out in the plane of the logic card, not perpendicular.
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Hebe das Display an, bis es fast senkrecht ist.
Where can I find a replacement display for my iMac?
iFixit has listings for replacements. Go to the Parts section
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Fasse die kleine Lasche an einer der Klebestreifen an der Displayunterkante und ziehe sie zum Entfernen zur Oberkante des iMacs hin.
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Wiederhole diesen Schritt und entferne den anderen Klebestreifen.
cutting through the adhesive is unnecessary if it's not been opened before (outside of an apple store) there will be a tab at the end of each VHB strip that you can use to simply pull the vhb strips off.
YES, exactly the same here. more but more simple.
To save a few steps and a bit of time, if you have a helper, they can hold the display at a 90° angle while you unscrew the brackets and remove/replace the hard drive rather than remove the display entirely. Also reduces the likelihood of damaging the display as you remove and handle it.
The proper way to remove the display according to the Macintosh tech manual and videos is as Rory McKenna and Lucio Alves have learned is to pull the tab at the end of each VHB strip until it is off.
This worked great! look for small left over adhesive on either edge of the bottom of the screen and pull each one towards the center. Screen assembly removes after that with no fuss.
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Hebe das Display nach oben aus dem Rahmen und entferne es aus dem iMac heraus.
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Möglicherweise musst du an einer Seite anfangen, das Display langsam anzuheben, um den Rest des Klebebandes zu lösen.
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Entferne folgende fünf Kreuzschlitzschrauben, welche die untere Displayhalterung befestigen:
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Vier 3,2 mm Schrauben
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Eine 1,7 mm Schraube
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Entferne die untere Displayhalterung von der Gehäuseöffnung.
Of all the parts of this entire procedure, replacing this one piece is the hardest part! The screws are tiny and they just don’t seem to want to grab the support piece. Also it seems to perform no function which is also annoying.
I left mine out. LOL
Line up the screw holes and press on the bracket from the back to help the screws grab. If your fingers are too big, press with the flat side of your spudger. As long as there’s no gap between the bracket and the iMac’s frame, the screws should grab easily.
I put it in at a slight angle lining up the right hand side holes, screwed in the two screws and gently pressed my finger behind it on the rest
If you only want to replace the HD and RAM, take a big shortcut and leave the logic board in, as well as all the parts needed to remove it (speaker, power supply etc). Once the display is removed, just take out the fan and the top two logic board screw. There is than sufficient space to gently remove and insert the two ram modules. HD can easily be replaced with an SSD by just removing the HD mounting brackets...
Voces mudaram de modelo iMac, desta foto para proxima, esse modelo desta foto nao tem slot nvme. O da proxima foto sim. Voces me fizeram comprar un nvme por engano...
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Entferne folgende Torx T10 Schrauben, welche die Festplattenhalterung am Rückgehäuse befestigen:
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Zwei 21 mm Schrauben an der linksseitigen Festplattenhalterung
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Eine 9 mm Schraube
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Eine 27 mm Schraube
Pay attention to this photo and where the fan is. It is 180° from where the previous step shows it is oriented to you.
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Drücke mit der Spudgerspitze abwechselnd auf jeder Seite des Steckers am Kabel zum Netzschalter und lasse ihn langsam aus dem Sockel "herauswandern".
I would advise that before removing the PSU unit and all other components from the bottom of the case that you remove the 5 screws at the bottom of the display which hold an insulation strip in place.
The guide shows this piece removed, but does not tell you how to remove it.
There will be 5, small J1000 screws. The middle one, which goes over Apple Logo is the shorter one of the 5, all others are the same length. Once this piece is gone removing the components is much easier, and chance of damage lessened.
Added to the guide. Thanks for the tip!
No need to remove power board and logic board and all other components, just remove the fan and it is quite "easily" accessable to change the RAM. Just need to use the tools to remove the old RAM and carefully install the new RAM.
I just did it without removing the logic or power board
could you elaborate a little more, I would love to skip the rest of these steps. How did you accomplish this?
ej P -
Oleksandr Trokhymchuk,
Thank you! You just saved me so much time! I wouldn’t call this “easy” but it saved me a lot of time and effort.
ej P: remove the fan assembly first. Then remove the connector that runs from the iSight camera to the logic board on the left.
the RAM is located right near that cable. It’s tricky to remove but you can pop open the connectors with a black nylon stick and the RAM chip will pop up at 45 degrees. Make a mental note on which way you will need to install the new ram as it’s tough to see. For the Crucial memory I got it was label side facing away you (facing towards rear metal enclosure).
the second chip has a plastic adhesive piece on it that you should probably attach to the new ram.
remove both chips then install the new ram in sequence from the board out.
In the photo for Step 28, the power button cable connector is placed around the power board screw hole on the top left of the power board.
However, on the iMac I upgraded, the power button cable connector was “fed” through the power power screw hole on the top left of the power board. The cable was too short to run around and below the hole.
Hence, I had to ensure the cable was “fed” through the hole during re-assembly and the screw carefully screwed back through the hole.
I guess every iMac is assembly just a bit differently, just to make repairs that much more fun.
This is not correct and may have been assembled incorrectly during a previous repair.
Just replaced the hard drive and RAM with SSD and 16GB respectively and did NOT remove the power supply or logic board. Tricky is a word to describe putting the RAM in without removing the logic board. You work in the dark with little room to get your fingers in between the logic board and the back of the case. I put the first RAM chip in without a problem (the one next to the logic board), but the second to four tries and dropped it behind the logic board three times before finally getting it to position correctly. Just impossible to see and must work but feel. Still it was faster than removing all the components… though did remove the fan (needed cleaning anyway). All in all I can’t say enough about the help the guide was through the upgrade ! Thanks !
I found this connector to be very tight and was afraid of breaking it off. I just kept slowly working on it—it did eventually come out.
I did try to sneak the RAM in without removing the logic board but my fingers were too big. I found it too difficult and just continued on with this guide.
I was not able to install the memory without removing all the components. My fingers are too big and I could barely get in that tight spot to swap out the memory. The hardest part about the power supply is that one connector under the chin next to the Apple logo. Once it is out, you are home free because it is so easy to plug it back in when you are putting it all back together again. Ridiculous that Apple did not put a simple access door behind those memory slots because they are on the backside of the Mac! They did an access door on the PowerBooks and it did not ruin the appearance. They could have designed a cool looking pop out door that only had a thin seam around it so it would still look good. Then you could remove the access door to upgrade the memory easily.
Does anyone know if this is the same situation as in the 2017 model? I just changed RAM in the 2017 version and also skipped taking out the logic board. I just bent a pair of tweezers and put some tape around the tips to make them less scratchy and used them to place the RAM modules into the slots. Worked supereasy and much much quicker than performing the complete tear down of the whole machine.
This step is impossible!
@wizdomonwheels, I don’t see how I can get the RAM shield off of the logic board to access the RAM without removing the logic board. What am I missing?? I’m guessing that those of you that are suggesting this technique are working on older iMac models that don’t have the RAM shield.
Yes, you are correct. It is likely the various steps are a bit different on each model. If I recall I was likely working on a 2015 or older system. If there’s a shield in the way, I can’t think of a way you could get around it without pulling the logic board.
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Drücke vorsichtig mit der Spudgerspitze abwechselnd an jeder Seite des Steckers der Netzteilsteuerung, um ihn aus seinem Sockel "herauswandern" zu lassen.
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Entferne die beiden 7,2 mm Torx T10 Schrauben, welche das Netzteil am Rückgehäuse befestigen.
In my case, the left side corner of the PS was caught against the Lower Support Bracket, and I had to remove the LSB in order to get the PS freed and out.
I think the author Walter Galan should put this in the main section of his instructions. I have TWO identical iMac 14,1 / i5 2.7GHz / 21 Inch Late 2013 / Order ME086LL/A. They both required removing the LSB. Thank you very much Walter Galan & others for your contributions.
Those screws were definitely not T10 but T9 on my unit
Those screws were T8 on my unit.
c'est du torx 08
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Kippe das Netzteil nach vorne.
When replacing the PSU (on the re-build) take care not to trap the power button cable behind it - I did...
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Ziehe das Netzteil leicht hoch und aus dem Rückgehäuse heraus.
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Drehe das Netzteil gegen den Uhrzeigersinn, so dass die rechte Seite etwa 2,5 cm höher als die linke ist.
In my case, the left side corner of the PS was caught against the Lower Support Bracket, and I had to remove the LSB in order to get the PS freed and out.
I think the author Walter Galan should put this in the main section of his instructions. I have TWO identical iMac 14,1 / i5 2.7GHz / 21 Inch Late 2013 / Order ME086LL/A. They both required removing the LSB. Thank you very much Walter Galan & others for your contributions.
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Schiebe das Netzteil nach rechts um es von den Schraubenpfosten am Rückgehäuse zu befreien.
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Drücke die Lasche am Stecker der Gleichstromversorgung zusammen und ziehe ihn gerade aus seinem Sockel auf der Rückseite des Logic Boards.
when pulled the cable, even slightly, the actual female piece that connects to the logic board came off. am i screwed?
Repairing sockets that come off the logic board is possible, but very specialised work. Unless you have a magnifying lamp and the necessary desoldering and soldering skills, it will be difficult but not impossible.
I could not disconnect this cable without fear of breaking something (as previous posters did). I found that I could skip this and the next step by wrapping the power supply in a couple layers of a small towel (to prevent shorting with any other metal surfaces), and laying the power supply on the aluminum face of the iMac near the Apple logo. This got it out of the way enough to do what I needed on the logic board (changing PRAM battery) after completing removal of the other items in this guide.
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Drücke die Raste an der Seite des Steckers des Wechselstromkabels mit dem flachen Ende des Spudgers nach innen.
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Halte die Raste mit dem Spudger gedrückt, fasse das Wechselstromkabel an und ziehe den Verbinder aus seinem Sockel.
I didn't disconnect the input cable to the power supply. Because I had the machine lying on its back throughout, I placed it on to the metal bit at the bottom of the machine instead (with a cloth to stop the metal getting scratched). The AC inlet cable was pretty tricky to get un-locked, and the PSU sat on the case fine. It didn't hinder anything else throughout the guide.
I thought from Dave’s comment that I could leave the power supply completely in place, but I was mistaken. In order to remove the hard drive assembly after you remove the center screw in it, you’ll need to at least unscrew it and the HD assembly will slip out. Like Dave said, you don’t need to unplug the AC or PSU, which I left hanging.
Getting power supply to the logic board unplugged is also tricky without unscrewing the two bottom screws. They didn’t make this part easy.
I would like to thanks Dave Hallett for his tip of not removing the AC inlet connector of the power supply. I simply wrapped the board in bubble wrap and taped to the iMac case, out of the way, thus giving access to the remaining disconnection procedures and preventing the board from scratching to the iMac case. It also made reassembly much simpler.
Yeah, that AC inlet plug was a nasty one to unplug, mainly because I was trying not to bump the solder joints on the PSU. After a few wiggles and pulls while manipulating the spudger tool to release the clip, it finally unplugged. Made it easier by removing the PSU completely so you don’t have to worry about it. Don’t worry, plugging it back in is a breeze!
With the right tool this plug comes out very easily. Forget about your tiny computer tools, go to the garage and grab a regular old needle nose pliers. Grab the clip and the plug at the same time. The plug will come right out.
Carin Ann— The most helpful comment on this procedure. After reading what you wrote I maneuvered the board, grabbed the clip with my left hand (a little awkward because of the cooling enclosure), squeezed the front of the plug, and got it out.
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Entferne das Netzteil vom iMac.
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Um dein Gerät wieder zusammenzusetzen, folge den Schritten in umgekehrter Reihenfolge.
Um dein Gerät wieder zusammenzusetzen, folge den Schritten in umgekehrter Reihenfolge.
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Ein Kommentar
Great guide. My question is this however, How does one test this PSU before they replace it? I can't seem to find a PSU pinout for this particular unit (661-7111)
The wedge is an extremely tight fit for this model. I was worried that the amount of force needed to use it as shown might damage the stand, so I used it with the long side down instead. It worked fine that way and didn’t need anywhere near as much force to insert.
roberttrevellyan - Antwort
Here’s a good YouTube vid on upgrading the RAM: Can a Normal Person Upgrade the RAM in the 2017 21.5" iMac?
Dan - Antwort
Here are a couple tips from me:
1) Expose the adhesive to extreme temperatures. I did this by transporting my iMac in my car, screen-down on a piece of cardboard on a cold February morning (in Chicago). When I went to pick up the iMac, the screen practically fell off the chassis. I would have been distraught by this if I hadn’t already planned this replacement. So it was a happy accident.
2) Remember to expell the residual power from the power supply by pushing the power button while the iMac is unplugged. This does NOT guarantee it’s safe to touch, but when I accidentally brushed the solder and exposed capacitors, I didn’t get shocked.
jerrid_foiles - Antwort
Instead of using the wedge, I placed the iMac faced up with the top side (web cam) facing me while I ran the pizza roller around. It worked out great!
Sam Fung - Antwort
“All iMacs also come with a traditional hard drive” mine doesn’t!! it’s HDD bay is completely empty, no SATA cable or anything. I guess I’ll have to upgrade the PCIe SSD instead.
Chris Hughes - Antwort
There is no replacement glass for this model, it is part of the LCD and impossible to remove or replace- the entire LCD has to be replaced unfortunately if the glass is cracked or damaged. You will have to Google search for a replacement. Also be careful with some of the lock tight tork screws as I broke one of my screw mounts taking one out.
Phil Tesone - Antwort
I used this service wedge but also found it a very tight fit. The same stabilization can be achieved by using a big rolled up towel.
Ernst - Antwort
While this is a good instruction guide, I recommend to also look at OWC’s instruction video about drive installation, before starting the exercise. Those install videos are very detailed and useful.
Ernst - Antwort
Main advice: TAKE YOUR TIME with the pizza roller.
Make several passes, until you really feel like there's no more sticker in the way. Stay away from the camera though (approx. 1inch / 2.5cm on both sides). This will reduce the work left with the plastic card. Adhesive is really on the edge of the screen so there is absolutely no need to go any further than the recommended 1cm / 3/8inch depth.
Where are the sensitive parts?
Facing your iMac, imagine you're looking at a watch. There are antennas on 1, 2 and 4 o'clock. Do not insert any metal piece there (nor anywhere else, btw). Other than that AND the screen cables underneath the camera, not much danger.
Froggy Manny - Antwort