Sostituzione ventola iMac Intel 21.5" EMC 2889

Scritto Da: Jeff Suovanen
  • Commenti: 54
Sostituzione ventola iMac Intel 21.5" EMC 2889

Difficoltà

Moderato

Passi

26

Tempo Necessario

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Introduzione

Se la ventola nel tuo iMac Intel 21.5" EMC 2889 è difettosa, non funziona o è intasata dalla polvere, usa questa guida per sostituirla e far sì che il tuo iMac torni a funzionare fresco e silenzioso.

  1. SrDNTSYqyhGMRNDC

    • Con il cardine libero di muoversi, l'iMac sarà sbilanciato e la lavorazione risulterà difficoltosa. Le riparazioni saranno più rapide e facili con un cuneo di supporto per iMac, ma potranno essere completate anche senza di esso.

    • Se intendi usare il Cuneo di cartone di supporto dell'iMac di iFixit, segui queste istruzioni di assemblaggio per montarlo.

    • Prima di iniziare a lavorare sull'iMac, scollega il computer dall'alimentazione e tieni premuto il pulsante di alimentazione per 10 secondi per scaricare i condensatori dell'alimentatore.

    • Fai molta attenzione a non toccare i contatti dei condensatori o qualsiasi punto di saldatura esposto sulla parte posteriore dell'alimentatore. Maneggia la scheda tenendola solo dai bordi.

    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 -

    Here’s a good YouTube vid on upgrading the RAM: Can a Normal Person Upgrade the RAM in the 2017 21.5" iMac?

    Dan -

    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 -

    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 -

    “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 -

    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 -

    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 -

    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 -

    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 -

  2. QPZ14vf5mNSObPx1
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    • Iniziare sulla parte sinistra del display, accanto al pulsante di alimentazione, inserire l'attrezzo per l'apertura dell'iMac nello spazio fra il pannello di vetro e il case posteriore.

    • Il perno sull'attrezzo per l'apertura dell'iMac impedisce di inserire la ruota troppo a fondo. Nel caso di utilizzo di un altro attrezzo, non inserirlo nel display per più di 0,95 cm, In caso contrario, si rischia di tranciare i cavi dell'antenna e provocare danni gravi.

    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.

    Richard Cook -

    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): Sostituzione strisce adesive iMac Intel 21.5" EMC 2544

    Alan Digby -

    It is very easy to crack the glass in front of the LCD during this step. I used the guitar pick, maybe it was too thick… crack is just on the frame but anyway it is disappointing :(

    Nikolay -

    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.

    Ernst -

    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).

    Carl Schultz -

    Merci pour ce conseil

    bry nicolas -

  3. SdaoaCo1EmiD4NqV
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    • Utilizzare l'attrezzo come una taglierina per la pizza: ruotarlo lungo lo spazio per tagliare la schiuma adesiva al centro.

    • Effettuare sempre una pressione con l'impugnatura dietro il disco tagliente. Tirando, il disco potrebbe uscire dall'impugnatura.

    • Far scorrere l'attrezzo lungo il lato sinistro del display.

    Erreur de traduction: "de bas en haut" et non de" haut en bas" sur le côté gauche de l'écran

    Moreau -

    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.

    plasticpool -

  4. r1eMkSSjJdpmWr1B
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    • Continuare a far scorrere l'attrezzo attorno all'angolo superiore sinistro.

    Ne pincez pas l’écran avec l’autre main. Vous exercez une pression inutile sur le verre et empêchez la roulette de couper le joint.

    phfoglia -

  5. sZNVaGR3f2vruyLS
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    • Tagliare l'adesivo lungo il lato sinistro del display.

  6. vSKcLcMFSZoPp6Gp
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    • Continuare lungo la parte superiore del display.

    • È consigliabile far scorrere ripetutamente l'attrezzo avanti e indietro lungo la parte già tagliata, per fare in modo di separare il più possibile l'adesivo.

    In this step can I cut along the display without make any damage to the front camera?

    arisnordico -

    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.

    dv1977 -

    I did all steps like this manuell but now the Display wont work only some colered strips are to see! Whats happend??

    Can anybody help me ? Maybe the connector cable is broken?

    djfanta -

    Check both connectors, probably one of them not seated well

    pzhivulin -

    You can add a SATA SSD if you already have a PCIe SSD Factory?

    kaserlik -

    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.

    pzhivulin -

    omg - forgot to switch the termal sensor from the old display...

    now fan runs like crazy...

    Andrei Balotescu -

    The key thing is to never put any force on the opening tool when working through the tape. Just roll it back and forth with ease.

    Ernst -

  7. eDPbRqQfKjS4oUnZ
    eDPbRqQfKjS4oUnZ
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    • Premere l'attrezzo attorno all'angolo superiore destro del display.

  8. 3c3b2XusJDWQekW6
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    • Far scorrere l'attrezzo verso il basso, lungo il lato destro del display.

  9. SAgRGwk3lGGO3ZCH
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    • Terminare l'applicazione dell'attrezzo per l'apertura nella parte inferiore del lato destro del display.

    • A questo punto, si consiglia di ripassare nuovamente l'attrezzo lungo tutto il display, per fare in modo di tagliare il più possibile l'adesivo.

    Yes, do it many times to loosen the adhesive.

    Noah Ralston -

    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.

    Carl Schultz -

  10. HVK2HNgts1D53wOs
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    • Sebbene l'attrezzo per l'apertura tagli la maggior parte dell'adesivo, il display sarà ancora leggermente attaccato al case. Occorre una scheda di plastica per liberare la parte restante dell'adesivo.

    • Poggiare l'iMac su un tavolo, rivolto verso l'alto.

    • A partire dall'angolo superiore destro dell'iMac, inserire una scheda di plastica fra il display e il telaio.

    • Fare attenzione a non inserire la scheda di plastica per più di 0,95 cm, in caso contrario si rischia di danneggiare i componenti interni.

    this step is extremely important NOT to stick in the cards too far….. doing so, you risk a 600 euro replacement as I experienced………

    Edgar Broekema -

    I drew a 3/8” line on my cards with a marker first.

    Max Romano -

    I’m reading this on the EU store, please change all measurements to cm/mm.

    Morgana Devina -

    @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.

    Richard Giratd -

    Here’s where OWC provides glass removal suction cups, which is a better solution than plastic cards.

    The suction cups help to easily lift the glass panel, without risking the damaging of any internal wiring that the plastic cards could cause.

    Ernst -

    Better to remove stand wedge at this point? Can’t see from pics

    derekrobinson -

  11. wUjiMGtv2IpkNB5p
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    • Ruotare delicatamente la scheda di plastica lateralmente per creare uno spazio fra il display e il telaio.

    • Eseguire movimenti lenti, facendo attenzione a non fare troppa pressione sul vetro del display, poiché occorre solo uno spazio di circa 0,63 cm.

    This part must be done very carefully or you can damage the flat cable from display, despite it was under a iron cover.

    Cassio Machado -

  12. qmVJHqIxctiuCbE5
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    • Far scorrere la scheda verso il centro del display per tagliare il resto dell'adesivo lungo l'angolo destro dell'iMac.

    • Occorre fermarsi prima della fotocamera iSight per non danneggiarla.

    You don't need to do it like this, simply open the iMac bendidng the LCD completely and use the pizza cutter to remove the adhesive.

    Felix -

    Using glass removal suction cups will avoid running this risk of damaging the camera (or any wiring).

    Ernst -

  13. pwG3JFqqfxxQXLID
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    • Inserire la scheda di plastica nell'angolo superiore destro nuovamente e lasciarla in sede per evitare che l'adesivo si riattacchi.

  14. B1l4C4H1WK3CwfsH
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    • Inserire una seconda scheda di plastica nello spazio fra il display e il telaio, vicino all'angolo superiore sinistro dell'iMac.

  15. 1eeYyLOXUgoVdMcU
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    • Ruotare delicatamente la scheda verso l'alto per aumentare leggermente lo spazio fra il display e il telaio.

    • Come sulla parte opposta, ruotare lentamente la scheda, per consentire la separazione dell'adesivo, senza esercitare una pressione eccessiva sul vetro del display.

  16. 1AtMSKY35dfSoyov
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    • Far scorrere la scheda di plastica verso il centro, fermandosi nuovamente prima della fotocamera iSight.

  17. KlhOFUANthUfPZrW
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    • Reinserire la scheda di plastica nell'angolo superiore sinistro.

  18. xXVPepFcNBfFlYLm
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    • Mantenendo entrambe le schede di plastica inserite vicino agli angoli come indicato, ruotarle delicatamente sui lati per aumentare lo spazio fra il display e il case.

    • In presenza di sezioni ancora incollate che non si separano, fermare la rotazione e utilizzare una delle schede per tagliare l'adesivo restante.

    • Iniziare a sollevare la parte superiore del display dal telaio.

    • Sollevare il display di pochi centimetri, poiché i cavi di alimentazione e dei dati sono ancora collegati alla scheda logica.

  19. 2CYaRvZMKD1MHJWF
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    • Solleva lo schermo abbastanza in alto da avere un accesso facile al connettore, ma non tanto da strappare i cavi e forzare i rispettivi connettori (alzalo di circa 20 cm).

    • Mantieni lo schermo con uno mano mentre con l'altra stacchi il cavo di alimentazione dello schermo .

    It was difficult to remove this connection. I ended up having to gently pull-up vertically a little on the wire side to unsnap it about 1mm and then horizontally wiggle it out.

    delacrj2 -

    I had a difficult time removing this connection. I had to lift the wire-side about 1mm before it unsnapped and then carefully wiggle it out horizontally.

    delacrj2 -

    Can this cable be replaced? I am worried mine is damaged. I have no display after the screen fell and stressed the display flex cables following an SSD upgrade.

    Jeremy Brainard -

    This step should be done with extreme caution and care, as this step 19 is not described in great detail (sorry, author).

    The first (most outward) cable will slide out by gently pulling it by its tabs. The second (inner) cable is more tricky, as the locking lever must be moved backward first, before gently pulling backward on the cable connector. The angled tweezers are useful here, to help lift that locking lever, because fingers are too big for this.

    Ernst -

    be VERY careful and SLOW...take your time. These displays crack VERY easily when removing and they'll spider web on you. I've done probably 20 or so of these and cracked 3 being super careful.....ugh.

    Faslane -

    I found the best way to unplug this display power cable was to use my right hand, and the fingernails of my index finger and thumb to grab the ends of the tabs on either side of the connector, squeeze, and pull the connector out gently.

    Phil McInnis -

    i think the cable nearest the case edge is held in by friction and can be gently pulled, maybe with fingernails or a spudger. The next cable is held by a wire lever clip as described above it unlocks so the cable can be removed. These cables are also fiddly to re-insert, I didn't get one of them home and had no display after power-up, so at the end, don't re-seal the screen until tested.

    Peter Taffs -

  20. Zh56FQPLtH1qJkBF
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    • Continua a tenere lo schermo con una mano, sblocca la staffa metallica di ritenuta del cavo dati dello schermo.

    • Stacca con cautela il cavo dati dello schermo dalla sua presa nella scheda madre.

    • Assicurati di tirare il cavo dati dello schermo direttamente fuori della sua presa, mantenendolo parallelo alla scheda madre, per evitare di danneggiarlo.

    Cannot seem to find a replacement cable for this, as I suspect mine is damaged. Can’t even find a part number. Anyone know what it might be?

    Jeremy Brainard -

    https://www.amazon.com/gp/product/B08TTL...

    That's the part I ordered for mine and it seems to work ok. I did make a point of contacting the seller and advising them of my requirement and they ensured I got the right part and it matches the description of the link. Bear in mind I bear no responsibility if yours does not work since I am just sharing what I did and what I ordered. Thanks.

    Jim Stanford -

    I also need that cable.

    cameronjpu -

    It's a little difficult to tell... but looking at the connection to the logic board on the video data cable, are the pins faced up or down?

    On the display, same question since it appears you have to "twist" the cable during the reconnection step.

    Jim Stanford -

    For this particular cable, take a good look before pulling on anything. Plug is locked on its socket with a bracket. You can lift this bracket by holding the small, flat black plastic handle that is attached to it. If you're struggling to grab it, use the end of the pizza roller handle to lift it, or the tweezers. Cable then comes off by pulling parallel to the main board.

    Froggy Manny -

    How can I tell if either of this cable is bad? My iMac display won't turn on after reconnecting it. I'm using an external display and everything is working except for the iMac display. If I go to settings - display the built-in display is recognize. But again nothing shows up in the screen - not even the apple logo when turning it on.

    Carlos Sosa -

  21. faYLZCcUqNgfLImh
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    • Solleva lo schermo in posizione all'incirca verticale.

    • A questo punto c'è ancora una striscia di adesivo lungo il bordo inferiore dello schermo che tiene ancorato il display alla scocca come se fosse una cerniera. Puoi indebolire questo adesivo muovendo lo schermo su e giù per alcune volte di seguito.

    The adhesive strip along the bottom is designed with a pull tab on each outer end. Rather than lever and pull the screen simply carefully pull the tab which removes that half of the lower adhesive strip and frees up the screen.

    Andrew Stephens -

    Yes, use the tabs as Andrew indicates. Super easy.

    Michael Adams -

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    • Fai attenzione a non toccare i conduttori del condensatore o le saldature esposte sul retro dell'alimentatore (in rosso).

    • Afferra la linguetta all'estremità di una delle strisce adesive del bordo inferiore dello schermo e tira l'adesivo verso il bordo superiore dell'iMac per rimuoverlo.

    • Ripeti questo passo con l'altra striscia adesiva e rimuoverla.

    • Se una delle strisce adesive si rompe prima di essere rimossa, usa una scheda di plastica per tagliare l'adesivo rimasto.

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    • Solleva lo schermo dalla scocca e rimuovilo dall'iMac.

    • Può rendersi necessario sollevare lentamente il display da uno dei bordi laterali per staccare l'adesivo rimasto.

    • Stai molto attento nel maneggiare lo schermo: è grande, pesante e di vetro.

    • Dopo aver tagliato l'adesivo, non può essere più riutilizzato per rimettere al suo posto il display. Segui questa guida per sostituire le strisce adesive che fissano lo schermo alla scocca.

    The adhesive strip along the bottom is designed with a pull tab on each outer end. Rather than lever and pull the screen simply carefully pull the tab which removes that half of the lower adhesive strip and frees up the screen.

    Andrew Stephens -

    Andrew, FTW! This worked perfectly

    Megan O'Leary -

  24. EXdXXZvFcdMYdPG5
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    • Delicatamente scollega il connettore del cavo della ventola dal suo alloggiamento sulla scheda logica.

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    • Rimuovi le tre viti Torx T10 da 10 mm che fissano la ventola sulla scocca posteriore.

    • La vite più in alto ha una guarnizione in gomma per aderire meglio e supportare lo schermo: lascia la guarnizione dov'è.

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    • Rimuovi la ventola dall'iMac.

Conclusione

Per rimontare il dispositivo, segui queste istruzioni in ordine inverso e usa la nostra guida per le strisce adesive per riattaccare il vetro del display.

Autore

Jeff Suovanen

Membro da: 06/08/13

426759 Reputazione

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