Modern Tech Fail: iMac 27" Retina Repair (Mac shuts off randomly fix + disk drive upgrade)

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  • čas přidán 15. 07. 2024
  • This is another public service repair video for people experiencing the same problem. My swanky Apple iMac shuts off suddenly and randomly every few minutes, and refuses to turn back on unless I disconnect the mains for a while. That points to a power supply problem. So we open up the big Mac by popping the giant screen, transplant the supply, and upgrade the hard disk while we are at it. But none of it is straightforward, and it does not go quite as smoothly as expected.... See next video for the damaged screen teardown: • Modern Tech Fail: iMac...
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Komentáře • 157

  • @39Kohm
    @39Kohm Před 5 lety +88

    This wasn't a fail, it did exactly what it was supposed to do. And the PSU didn't fail on the electronic load because the electronic load doesn't understand the "my warranty has expired" signal from the PSU :)

    • @txm100
      @txm100 Před 4 lety

      Yeah and Aliens did kill JFK..

    • @k1ngjulien_
      @k1ngjulien_ Před 4 lety +1

      @@txm100 apple has been exposed for planned obsolescense in the past. it doesn't surprise me that they are still doing it.
      their products are amazingly engineered but they still fail on areas which even an intern could spot (like the screen cable fiasko of the recent macbooks)

  • @SudosFTW
    @SudosFTW Před 5 lety +12

    As a man that had an unintentional head-check not long ago once said, if there's fan spin, it's fixed.

  • @thetaleteller4692
    @thetaleteller4692 Před 5 lety +19

    Fixing Teletypewriters from 70+ years ago ... an interesting experience. Fixing an 3 year young apple ... annoying at best, sometimes impossible. Can you imagine someone repairing one of those in the 2090ies? I am sure your Model 19 will work even then, given some oil and adjustment.

  • @AmericanLocomotive1
    @AmericanLocomotive1 Před 5 lety +21

    If only there was some kind of standardized interface that a computer could use to get temperature and drive health data. Some kind of smart interface...

    • @FrozenHaxor
      @FrozenHaxor Před 3 lety

      The word planned obsolescence comes to mind....

    • @thesteelrodent1796
      @thesteelrodent1796 Před 2 lety +1

      not like apple to ever use anything standard, even if they knew how

    • @AttilaAsztalos
      @AttilaAsztalos Před rokem

      Yeah, that part comprehensively baffled me. WTF, we have hard disk temperature reading since the time of the dinosaurs, what else did they need...?!?

  • @tenmillionvolts
    @tenmillionvolts Před 4 lety +11

    Marc, while working for hours on a Mac: "I've been vanquished by new technology"
    Me while doing a 10 minute Windows PC card swap: "Nope, just shafted by Apple"

  • @leisergeist
    @leisergeist Před 5 lety +25

    At least it'll run faster with your racing stripe now!
    Probably gives it like 6 more GHz

    • @mspysu79
      @mspysu79 Před 5 lety +1

      6 GHz, na he did not throw an IBM Power or Z series chip into it :)

  • @Moonblade042194
    @Moonblade042194 Před 5 lety +3

    Heck yeah a new video!!! Instant watch!

  • @jmpattillo
    @jmpattillo Před 5 lety +21

    Just dunk it in simple green

  • @delwoodbarker
    @delwoodbarker Před 5 lety +1

    Instead of new adhesive strips, I found that clear tape applied around the edges of the display and case hold them together firmly. The tape is easy to trim so it doesn't show; just the little remaining 3/8" strip all around the perimeter was very effective. It also makes it easier to repair down-the-line.

  • @Ivo--
    @Ivo-- Před 5 lety +40

    They are nicely engineered to be almost impossible to service

    • @AppleReviews
      @AppleReviews Před 5 lety

      with proper tools they are very simple to service :) But please bare in mind - it is not Tower PC

    • @GelatinousSSnake
      @GelatinousSSnake Před 5 lety +3

      ​@@AppleReviews "With proper tools" Uhh, no. Not everyone has the money or patience to have/learn to use a BGA reworking station, for example. And because all components on a Mac are soldered nowadays (you can't even upgrade RAM or SDD on them L M A O), that is an issue right there.

    • @justincal6817
      @justincal6817 Před 4 lety

      @@GelatinousSSnake I fix about 4 of them In a 8 hour day.realy easy and I just use a heat gun and playing cards....

    • @demef758
      @demef758 Před 4 lety

      You're telling me that the cheapest PC has no BGAs on their logic boards?

  • @delwoodbarker
    @delwoodbarker Před 3 lety

    On reassembly, I used clear tape applied along the edges of the screen and chassis, trimming it so it is only as wide as the two layers. It vanishes and holds the screen and chassis tightly, without re-gluing.

  • @DaveCurran
    @DaveCurran Před 5 lety +2

    It's going to be interesting to see how all this stuff gets on in the computer museums of the future. Lots of dead machines with black screens, and some hand drawn pictures of how they think the desktop might have looked.

    • @DandyDon1
      @DandyDon1 Před 5 lety

      That and our recent loss of Net Neutrality. Will it go back to the old AOL days of....(your imagination here).

  • @kerozin520
    @kerozin520 Před 5 lety +3

    Use heat on adhesive, lots of it when opening modern stuff like that. It significantly reduces the force you need to use for separating panels.
    I usually heat edges to around 60C and if you're lucky you can even reuse old adhesive strips.

  • @goober2969
    @goober2969 Před 5 lety +1

    Marc. I had two different 27 inch iMacs that had the exact same PSU issue. The old one ran for about 3 years with no issue (just long enough for the Apple Care to expire) before it started doing that, and I opened it and replaced the PSU myself. The original supply was made by Delta, and the replacement was a LiteOn. Knock on wood, it's still running (my wife uses it). I've been into it for a total of 3 times. I had to replace the hard disk twice after the PSU replacement. I do think Apple has thermal issues on those iMacs.
    My newer one ran for about 2 1/2 years and started doing the same thing. Fortunately the Apple Care had not run out, and I made Apple fix it. Unfortunately, I had to take it back to them about 3 times before they would finally admit it was a hardware issue and they ended up replacing the PSU and the logic board. I'm going to have to think long and hard before I buy another iMac. I love the MacOS and the computers when they work, but if they ever quit... sigh.

  • @Marcelotecnologia1
    @Marcelotecnologia1 Před 5 lety

    Valeu a dica, bastante intuitiva.👏👏👏
    Muito obrigado 👍

  • @FurrySergal
    @FurrySergal Před 5 lety +13

    I have this exact Macintosh and, upon carefully upgrading the hard disk after the computer was only a year old, just like you I encountered the same exact issue with the screen. I always assumed it was my own incompetence but after seeing the same artifact on yours in the same place, being the same model\year Macintosh as mine I think there may just be a 'slight' critical defect in the screen. As much as I do love certain aspects of Apple's aesthetics, trading screws for adhesive and an extra mm of space-saving isn't worth the lack of any practical durability.

    • @CuriousMarc
      @CuriousMarc  Před 5 lety +8

      Now I feel much better! Makes two of us. Actually, there are many of us. Several reports of this stripe, always at the same spot on the right of the screen, about same width. There must be a design weakness right there. I was rather gentle with the screen, I am very surprised it got damaged.

    • @gideonbouwman4904
      @gideonbouwman4904 Před 5 lety +8

      When I worked at a Apple repair center, I repaired many iMacs like this, and you're not the only one!
      This is a common issue, due to the heat and stress your screen goed through, and when you took it apart, it probably got an nanocrack in the glass panel itself due to age.
      When it was a well used iMac, the chance of getting that line was a lot higher, with less used / aged iMac's we never had problems.
      Just a sad case of bad luck!

  • @erdepfel
    @erdepfel Před 2 měsíci

    THANK YOU MEN FOR THIS VIDEO VERY USEFUL

  • @FuzzyLogicxxx
    @FuzzyLogicxxx Před 5 lety +1

    Hooray for a new CuriousMarc video!

  • @3800S1
    @3800S1 Před 5 lety +1

    I remember apple drives being non standard since the early 90s at least. There were special connectors or firmware that didn't work in a PC.
    Even the graphics cards were/are a nightmare. Non standard version of a already uncommon enterprise interface.

  • @dglcomputers1498
    @dglcomputers1498 Před 5 lety

    Compare Apple to another PC giant Dell, my brand new consumer grade laptop has a disassembly manual freely available on their website for anyone to use, yes no component level repairs and the screen/touchpanel is designed to be replaced as one but all other non-soldered parts can be replaced and there are instructions to do so. They even went to the trouble of putting the power connector on it's own board separate to the mainboard and just plugged in to the mainboard with one connector. As the power connector is generally a major failure point on laptops this is a very good thing.
    As for warrenties, my very first laptop (a FujitsuSiemens Amilo Pi1505) had a major hardware failure 3 days! before the warranty ran out, they ended up replacing the motherboard, memory, audio board and processor, if that had only happened a few days later then I dread to think how much it would have cost to fix.

  • @brainndamage
    @brainndamage Před 5 lety +10

    The earlier iMacs that had easily removable screens held on with magnets were still acceptable for service (I upgraded the CPU & put in a SSD with no hacking for a relative once) but this is just BS. GLUE the most sensitive thing (the screen) to the case and make it the only way to open the thing at the same time? I guess it works to lower their bottom line (higher profit margin) and increase sales of new units = more profit, more perfectly good electronics shredded & burned. How environmentally friendly.

    • @Membrane556
      @Membrane556 Před 5 lety +5

      Apple is probably one of the least environmentally friendly companies out there.
      The fact their HQ is fully solar power has little impact on their environmental impact as most of the energy involved most of it is tied up in manufacturing.

    • @demef758
      @demef758 Před 4 lety

      $9 is gonna break your bank? www.amazon.com/Display-Adhesive-076-00009-076-1419-076-1444/dp/B07DXLXZTS

  • @tim0steele
    @tim0steele Před 3 lety +1

    iFixit say it's important not to cut in more than 9.5mm to prevent screen damage.

  • @JohnDoe-ml8ru
    @JohnDoe-ml8ru Před 5 lety

    There's a damn good reason why most shops won't touch these turds, and you just found out why! :)

  • @AttilaSVK
    @AttilaSVK Před 5 lety

    This is why I stick to my trusty old 2009 Mac Pro. I upgraded it to a Xeon W3680 (6 cores running at 3.33 GHz), 16GB of DDR3 ECC memory, put in a 256GB SSD next to the 1TB disk and it's more than enough for my work related stuff. Sometimes I even stay in after work to edit my videos on it, rather than on my 2011 13" MacBook Pro. The 30" display helps a lot as well :)
    None of these two Macs needed service so far, and I hope it will stay so.

  • @SteveDaviesCPT
    @SteveDaviesCPT Před 5 lety

    I suppose such a large screen requires great care in handling - I guess transfer the screen face down onto a flat service and move it with support across the face rather than supporting it at the edges only. But interesting to see that opening up is not so hard, since I have a similar machine.

  • @stevehackenberg
    @stevehackenberg Před rokem

    I replaced the power supply in my late 2015 27" iMac just days ago. Removed the fan and blew out all the dust etc. Everything tested fine after the install. I then was a little concerned over some very thin extra sticky adhesive left on the top of the panel strip. So i decided to clean it up a bit more before laying the new adhesive strips. One area of glue was extremely frustrating so I got a little too aggressive with some isopropyl. Some excess seeped under the panel and knocked out one pixel strips from top to bottom just like the line shown here. I was hoping the alcohol would just evaporate and stop bridging the pixel strip.I am hoping if I can absorb the excess After a few days of running the screen, nothing has changed. I have the cover off the back of the board on the top of the screen hoping to absorb and excess liquid. I am using thin paper strips inserted under the connector ribbons in that section. I will update this upon re-testing. Bottom line is, do not squeeze too much liquid off your pads when cleaning up the the adhesive at the top of the screen.

  • @thesteelrodent1796
    @thesteelrodent1796 Před 2 lety +1

    now in 2021, Apple's being forced by legislation to let people repair their products and have promised to provide tools and parts (only in the US for now), but it remains to be seen if they'll change how they make things and whether their spare parts will be reasonably priced

  • @GimmilFactory
    @GimmilFactory Před 5 lety +16

    All the discolored black on the power supply board is a sign of overheating. There is also a 3.3v and a 5v on the PSU as a standard windows PC. You may have cacked the screen with the cutting knife; you're "supposed" to use a heat gun in conjunction with the roller knife to remove the screen. I've repaired 12 of these guys and have come across the black line issue - Sadly you removed the screen too quickly and flexed it a bit further than you were supposed to.

  • @tschuuuls486
    @tschuuuls486 Před 5 lety +14

    If you take it apart again, put in an SSD. Will make a massive difference on MacOS, even compared to a modern 7200rpm disk. You should be able to use the terminal to make your own fusion drive. Don't know about the retina ones, but the older ones just had a spare sata plug on the board.

    • @justincal6817
      @justincal6817 Před 4 lety

      I was wondering why he didn't put a PCIe drive in. It's apples way of getting more money later.

    • @FrozenHaxor
      @FrozenHaxor Před 3 lety

      @@justincal6817 How could he put a NVMe drive in that POS? Lol. It has only a SATA interface, and a dodgy one with proprietary modification at that.

    • @kietvo1992
      @kietvo1992 Před 3 lety

      @@FrozenHaxor on 27 in model, there is a pcie slot on the back of the mobo.

  • @michvod
    @michvod Před 5 lety +2

    It also looks like you have a problem with the backlight now, looks like stage light effect on the bottom.

  • @phonotical
    @phonotical Před 5 lety

    I saw something recently with a white line on the screen, it wasn't a problem with the screen but a damaged solder connection on an IC or chip

  • @maicod
    @maicod Před 5 lety

    Marc I hope you will be able to get a new screen on the grey market

  • @NathanTallack
    @NathanTallack Před 5 lety +1

    I remember the heartbreaking defeat I saw in my uncles face when he tried to repair a problem with his new car and finally accepted that there was hardware that he simply did not have the skills or tools to troubleshoot. A lifetime of skill and experience in being a mechanic had become redundant.
    Turned out the problem was with some electronic sensors somewhere inside that were doing a job (his words now) "that were done perfectly for decades with a few serviceable mechanical parts".
    I pointed out to him the MTBF of the new sensors (normally) would mean there is less servicing required. He did not want to hear about it. :P

    • @vincei4252
      @vincei4252 Před 5 lety

      I hear and understand what you're saying but when you go from several hundred mechanical parts to thousands (100's of thousands?) electronic components, the computers and the software to drive it all is it really more reliable? I'll never forget walking into my Saab dealer years ago, just after they introduced a model that had electronics &computers up the wazzo., There was a lady at the service counter almost in tears over the fact that her brand new car and its electronics had a mind of its own and so many things didn't work properly. Granted this was early days of overwhelming automation in cars but it does make me wonder. tbh I think cars are going the way of being way more disposable which is a shame - seems to be the same "Apple" mantra.

    • @vincei4252
      @vincei4252 Před 5 lety

      Just to clarify my point. In another life I used to work for the electronics/software arm of the McLaren F1 racing team. If there's one thing I took away from that experience it was failing sensors that were the culprit in a lot of race failures. Looking at the telemetry during and after the race you'd see where some extremely expensive sensor (the cars are covered in them) started to fail and affect the performance of the car. Sometimes it was possible to patch the code in the car to get around the problem but invariably you weren't in the position to do such things during the race. Yes, there was an applications engineer with listings of the code at all races and he had knowledge of how to binary edit the software to jump around problematic things. Those were the days :-)

    • @NathanTallack
      @NathanTallack Před 5 lety

      Let's not compare apples with oranges here. We are not talking about a peak performance motor vehicle here. We are talking about a consumer level product. You don't have a team of qualified mechanics to service your family car, just like you don't have a team of Marc's to service your iMac. ;)
      So, when you build a machine with quality parts, as the iMac was built (and my uncles car, presumably) you favour high quality poorly serviceable components over less complicated (read: legacy) components. It lets you build something that is superior in almost all ways, and most of the time (sorry Marc) you get a product that runs perfectly throughout its planned service life.
      So, my uncles car has a sensor that lets it have lower emissions and better fuel economy. It means that it is something he cant fix himself if it fails, but in the long run, all things considered equal, it is better than the old way. :)

  • @SoddingaboutSi
    @SoddingaboutSi Před 5 lety +4

    Marc, i'm surprised you didn't fit a SSD?

  • @Beun007
    @Beun007 Před 4 lety

    Super duper interesting!

  • @MartinGod3992
    @MartinGod3992 Před 5 lety +2

    its probably the voltage rails dropping below ATX spec, even on a PC if they drop below a certain level it will indeed shut down the machine

  • @Madness832
    @Madness832 Před 5 lety +1

    Kind of makes me wonder what would be more fun: working on modern Apple products or having a root canal?

  • @fabienleguen
    @fabienleguen Před 5 lety

    Thanks for sharing.
    Is it possible to figure out what went wrong with this screen after replacing it ? Tearing everything apart and giving it a (microscope) inspection could do the job ? Or even better, can it be fixed ??

  • @agentsmithisalive
    @agentsmithisalive Před 5 lety

    How about trying the old hair dryer trick on the PSU and seeing if the failure mode is thermally driven?

  • @yjk_ch
    @yjk_ch Před 3 lety

    Electronic devices with strong tabs holding two case pieces together are evil, but glued screens are on the NEXT level.
    I don’t mind breaking plastic pieces if it’s mine, but screens? Oh no...

  • @vincei4252
    @vincei4252 Před 5 lety

    14:10 I think the expression on the face of the middle Minion says everything we need to know.

  • @chuuni6924
    @chuuni6924 Před 5 lety

    Did you check the quality of the power coming out of the supply? Just speculating, but perhaps there's simply enough ripple or something on it to make the logic board shut down. Or perhaps it fails intermittently but "stays on" (which could perhaps even explain why you needed to unplug it to get it to power on; would perhaps imply that the machine is still powered, but just latched up due to a brown-out).

  • @pa4tim
    @pa4tim Před 5 lety

    You can rebond by using a soldering iron at 180 degrees C.

  • @wearethewatt2950
    @wearethewatt2950 Před 3 lety

    My guess on the psu is ovp tripping, you'd need a fast load step for that.

  • @volodyavaynshteyn6038
    @volodyavaynshteyn6038 Před 3 lety

    Its better to open it with tool from the top, from middle to left and to right side. Mistake can cost a lot. When LCD LEDs are overheated and failed (this happens after some time), inverter checks the amperage and turns the screen off. This may be a reason. Resoldering LEDs helps

  • @mlebout
    @mlebout Před 3 lety +1

    Did you iMac work properly after you replaced the PSU? If so, for how long? Thanks!

  • @SidneyCritic
    @SidneyCritic Před 5 lety

    I would've used black cloth race tape - no pun intended - around the edges to hold the screen until I fixed it.

  • @ericsjournal5275
    @ericsjournal5275 Před 5 lety +1

    Hey Marc
    Hope you have the answer for my iMac (Retina 5K, 27-inch, 2017), i crack my screen and is it possible to replace glass front lcd? or i should buy brand new 5k display screen? thanks

  • @jeremiefaucher-goulet3365

    Since this is the computer you use to edit your video, I was sure you had fixed it. The mere existence of this video seemed like a spoiler to me...
    But to my surprise, it still had issues... So nothing spoilt ;-)

  • @DAVIDGREGORYKERR
    @DAVIDGREGORYKERR Před 5 lety

    Is it time to go retro and get BeOS 5 Professional 586 and UltraDV and use that instead of OS X and I hate to say this that maybe OS X is no help here but maybe for smaller videos, Can you not get a LCD screen from somewhere else.

  • @retroretiree2086
    @retroretiree2086 Před 5 lety +1

    One observation: You made a "beginners error" in replacing 2 parts at the same time. Now you don't really know if it was the HDD (possibly overheating) or the PSU actually causing the shut downs. I'm with others here on the reliability and fix-ability of Apple kit!

  • @chrfit1
    @chrfit1 Před 5 lety

    Just getting the glass off these things is a risky process, so sorry this didn't go to plan :(

  • @MaxiUga
    @MaxiUga Před 5 lety

    Никаких больше HDD! Только SSD!)

  • @RobSchofield
    @RobSchofield Před 5 lety

    I had a failed graphics card that caused shutdowns like this - the GPU was unobtanium so it was irreparable. Have a look at The Rossman Group for Apple repairs at component level.

  • @gordonmacqueen8694
    @gordonmacqueen8694 Před 5 lety

    awe, RIP Borders!

  • @gaspardeelias2485
    @gaspardeelias2485 Před 5 lety +11

    It's probably designed by an architect and not an engineer!

    • @kbhasi
      @kbhasi Před 5 lety +1

      I never thought about it that way. Thanks!

  • @noelj62
    @noelj62 Před 5 lety +3

    It's kind of a life philosophy.
    You buy a Mac; you buy the mark, the style, the fancy looking insides that you'll never see, and no DIY repairs.
    You buy a PC: marks are of no concern (unless it's a Foxconn), no recognizable style, colourful insides which you'll become addicted to with time, and you'll never need another serviceman if you're smart enough.

    • @Diggnuts
      @Diggnuts Před 5 lety +1

      Well, for some people (like me), it's about the OS and a Hackingtosh just won't cut it for work. Typing this on a 10 year old MBP by the way, so experiences may vary.. a lot.

  • @DandyDon1
    @DandyDon1 Před 5 lety +3

    Apple doesn't want you touching the internals of their "hermetically sealed appliances". ;)
    Now that many have seen Marc's company ID, how many will show up at his work place! haha
    I'll bet that at some point, Apple doesn't bother to repair glued together products like this. I'd never venture into disassembling my Viewsonic display to repair it, but at least I can take my PC apart from time to time and blow the dust out with a certain amount of confidence it will continue to operate. :o)

    • @DandyDon1
      @DandyDon1 Před 5 lety +1

      I have a theory that like current HAM toys, PCs are open-able boxes for builders/tinkerers somewhat and MACs are for appliance operators....
      I do own a IPhone though with the killing of features, the app store in I tunes, being unable to back up notes to Outlook ( I have no use for graphics in notes). I'm thinking the next one will be something else.

    • @DandyDon1
      @DandyDon1 Před 5 lety +1

      I hate it when something seems to "feel" as if it turned out much worse than when one started. It's quite disheartening.
      At least you still have your Lenovo laptop. ;D

    • @Ergzay
      @Ergzay Před 5 lety +1

      If the comments on this video are any evidence, the fanatic apple haters are much more common than the apple lovers. Those are the types that would show up at his workplace.
      From what I've seen most Apple haters hate Apple from a sense of jealousy because their inability to afford the computers.

  • @phonotical
    @phonotical Před 5 lety

    Might be a sensor failure, for temperature, id start by looking at the power button

  • @DoRC
    @DoRC Před 5 lety

    Doesnt cost much more than a pc??

  • @kinghugosorcerersapprentic9702

    OMG! I actually have a 2017 27” iMac that started crashing randomly (and with no “iMac crashed unexpectedly” if turned back on.) a year ago. It also would not turn on if I pressed the button and I had to unplug it from the power supply. Using a different extension cord would sometimes “help” it stay alive longer. I the reformatted my drive and started from scratch. My iMac seemed to be ok after that but just two days ago it started crashing again. So it stayed trouble free for an entire year after reformatting. (Definitely didn’t use it daily though, more like just during weekends.) It’s such a weird problem. I’ll need to try this.

    • @DannistylezTV
      @DannistylezTV Před 2 lety

      It just happen to me today I have exactly the same one 2017. What did you do?

    • @kinghugosorcerersapprentic9702
      @kinghugosorcerersapprentic9702 Před 2 lety

      @@DannistylezTV like i said: reformat your drive. It helped. But it hasn’t fixed the problem. Keep many back ups and maybe switch to a self built computer next. My computer in 2017 was overpriced (from Apple store) but the tech was pretty decent (still holds up a bit, I guess) but nowadays you pay Apple premium price for tech that really isn’t up to modern standards. I’m building my own computer next and hope getting back into not-so-shiny windows won’t be a let down…

  • @compu85
    @compu85 Před 3 lety +1

    It's too bad they went away from the magnet arrangement of the earlier iMac. It's not too bad do work on.

  • @daviddevillers6790
    @daviddevillers6790 Před 5 lety

    I blame the Minions! :)

  • @AlainHubert
    @AlainHubert Před 5 lety

    If this is indeed a common failure on 27" iMacs, caused by a faulty PSU, there should be a recall by Apple to replace those at their own cost (and risks), because it's a manufacturing flaw. BTW, the cooling fan seems to blow cool air over the CPU/GPU first and then over the PSU effectively blowing warm/hot air off of the CPU/GPU radiator over the PSU. Maybe it's a long term overheating damage problem, like you suspect ? Are the backlighting LEDs at the bottom of the screen this bad on an iMac ?

    • @CuriousMarc
      @CuriousMarc  Před 5 lety +1

      At least you'd think they would have corrected it by now. The PSU fault is not obvious though. It's some kind of silly system interaction, degraded thermals or more likely a faulty temp or current sensor. The PSU was just fine out of the iMac. The lighting problem is because I did not reseat the LED connector properly. There is one common wire for the odd and one for the even LEDs. One of them was disconnected. The screen LED lighting is fine.

  • @stephenfalken925
    @stephenfalken925 Před 5 lety

    terabytes not terabits :)
    thanks for the videos!

  •  Před 3 lety

    Hi Marc, after 2,5 years, do you still have this Mac? Did the change of PSU solve your problem? I have very simillar problem with my late 2015 5K iMac and I am considering the change of PSU, thanks :)

  • @grappydingus
    @grappydingus Před 5 lety

    Borders Rewards card spotted! RIP.

  • @PL-VA
    @PL-VA Před 5 lety

    BORDERS? They're still around? I thought they went belly up a long time ago?

  • @phonotical
    @phonotical Před 5 lety

    I'll take it if you're dumping it 😂

  • @zh84
    @zh84 Před 5 lety +7

    It is interesting to compare Louis Rossmann's approach to these things. He repairs Macs for a living and is not positive about the experience.

    • @patc4624
      @patc4624 Před 5 lety +2

      He makes it abundantly clear how poorly they are engineered and built

  • @DTYPTM
    @DTYPTM Před 3 lety

    I have a Late 2014 27" iMac and also have these shutdown problems. Trying to install any OS fails because it reboots in the middle of installation. I can boot from an external drive with an already installed OS though. At first i was using the native 5K resolution but it would reboot after 1-2 min. I bought another power supply but the problem was still there even after replacing it. So i thought maybe this used psu i just bought has the same defect?! I was not going to buy 3-4 other psus until i found a good one so what i did this: i made myself a custom cable that plugs into the psu's 12 pins connector (6pins are ground, all others 12V) and connected the other end in a known working 700W PC power supply thus bypassing all current draw from the original psu. If the iMac's psu really is the problem then i will not have any shutdown problems. But the shutdowns are still there... I replaced thermal paste on gpu and cpu, tried replacing ram, removing drives, zapping the pram etc... Nothing make that annoyance disappear. The problem, and i suspect it really is the case for many of us, is that it is the Logic Board that has degraded components that fail when the power draw is too high. Some parts must have been damaged by heat or are simply not good quality and cannot sustain stress anymore. I'm sure someone like Rossman group would pinpoint the source in no time but for me it's a big challenge. If only i had access to schematics and boardview.
    How many of you that replaced the psu never had another shutdown?

    • @CuriousMarc
      @CuriousMarc  Před 3 lety

      Replacing the power supply did it for me, I have never had this problem again. But I agree it's bizarre that I could not get my "bad" PSU to fail outside of the Mac - it has to be an interaction between the PSU and the main board/ firmware. Your experiment does not make sense to me either. If the PSU was truly bypassed, there would have been no way for the computer to shut it down. Somehow your original supply was still in control.

  • @pvc988
    @pvc988 Před 5 lety +21

    If Apple released a car, engine compartment would be welded shut.

    • @booboo699254
      @booboo699254 Před 5 lety +3

      They have already, it's call a Tesla. Read up all the issues attempting to fix your own Tesla or trying to purchase spare parts.

    • @zh84
      @zh84 Před 5 lety +1

      That's an awfully good way of putting it.

  • @orionfl79
    @orionfl79 Před 5 lety +2

    MINIONS!!! ^_^

  • @MVVblog
    @MVVblog Před 5 lety

    Very nice but too fragile!

  • @hblaub
    @hblaub Před 5 lety

    I hate these screens glued to the rest. And thermal throttling in general. But, the rest of the iMac looks nice, I admit.

  • @scowell
    @scowell Před 5 lety +5

    Watch Louis Rossman for more on your problem.... sad to say, it's an Apple problem.

  • @daicekube
    @daicekube Před 5 lety

    Goodness gracious me! I haven't heard the word "kludge" used in a loooong time! ;) But don't use that word together with the cable "adapter". Is it really something that should never have been let out through the door?

  • @an3k
    @an3k Před 5 lety +1

    Apple does not use a modified firmware on the HDD so they can read the hard disks temperature through SATA. There is a thing called S.M.A.R.T. and it's part of the PATA / SATA protocol that allows one to read all sensor data the HDD is sending to be read.
    I read two temperatures from my SSDs (Flash chips and Controller chip) or just one from my HDDs ... on a PC with off-the-shelf hard- and software.

  • @ih8tusernam3s
    @ih8tusernam3s Před 3 lety +1

    If they wanted a quiet drive, you'd think they'd of used an SSD.

  • @rasz
    @rasz Před 5 lety

    ifixit sells suction cups for a reason. hey, at least you saved $15 :(

  • @bitteroldskunk
    @bitteroldskunk Před 5 lety +1

    Power supply may have been fine, the old hard drive may have been the cause of it randomly shutting down. A failed platter bearing/bushing may not create noise or a rumble. But it may have been slowing down enough or creating enough heat to make it randomly trip the power supply's over current? Which is odd you ramped it up to its max load and it did not trigger the protection circuit. Mac's are weird machines and in some ways poorly thought out for serviceability

    • @blair79bear38
      @blair79bear38 Před 3 lety

      Which is entirely possible. I recently had a 2007 iMac totally fail. Not a great loss, the software developers always seemed to forget about that 'enhanced' processor and a new upgrade would cause a crash until the developer like Adobe would realize their mistake and there would be a fix for it. it used to shutdown on its own from time to time. maybe days apart. one day it went down. unplugging and plugging back in failed to reset the thing and that was that. That was the first iMac failure I've had so far. first Mac I bought , my second was bought a couple of years later and it still runs just fine if not a little long in the tooth. I've had plenty of failures with Winblows hardware over the years. I run Linux of some flavour on that older hardware.

    • @bitteroldskunk
      @bitteroldskunk Před 3 lety

      @@blair79bear38 Yeah, same for me when it comes to PC hardware failures but those were "User Inflicted". But, when it comes to mac's and my personal issues I've always run across the lemons of Apples hardware.

  • @phonotical
    @phonotical Před 5 lety

    Or the damage could have happened to the screen at 2:47...

  • @zaprodk
    @zaprodk Před 5 lety +1

    I don't know how the panel looked before, but there is something wonky with the backlight in the bottom of the panel!

    • @jammi__
      @jammi__ Před 5 lety +1

      Yeah, I think it didn't like being bent like it was when pulling it off the bottom edge adhesive.

    • @MVVblog
      @MVVblog Před 5 lety

      jammi I also see that issue right now, this is surely not normal

  • @vincei4252
    @vincei4252 Před 5 lety +1

    I can't believe I almost conned myself into buying one of these. Remember, beauty is only skin deep. My condolences.

  • @AxelDominatoR
    @AxelDominatoR Před 5 lety +16

    Enjoyed your video, like I always do, but I have a problem with your praising of the brilliant engineering of Apple products. While they may be subjectively nice looking (not for my taste, but I don't judge), objectively they are very badly engineered.
    All of them have horrible thermal dissipation, which leads to reduced components life. Most of their circuitry design is just botched together and you can hardly call that good engineering practice. They have fuses that don't blow and traces that burn instead of the fuse, their components and manufacturing are extremely cheap quality (even though you're paying premium money for the machine) and they are made to be non-repairable by the end user.
    Nothing wrong with liking the machine or the brand, but please don't call that good engineering. Call it good looking or something more appropriate, but this myth of Apple products having better hardware than other brand is what's costing lots of people money, as non-tech savy buy Apple products because they believe they are overall better than any other brand, pay lots of money for that and after a year or two find themselves with a pile of junk. Spreading the myth doesn't help.
    Sorry for the rant, but awesome video nonetheless!

    • @WaltonPete
      @WaltonPete Před 5 lety +8

      Yes. There's a reason Apple has recently attained the distinction of being the first $1 trillion company on the NYSE and it's not through using quality components throughout. Overcharging for the 'privilege' of owning something mass produced in a Chinese sweat shop probably helps!

  • @phuzz00
    @phuzz00 Před 5 lety

    Marc, when you originally removed the display cable @3:55 you pulled it horizontally. The little metal clip with the black tape on is there so you can lift it *vertically* up from the board. So it's possible that you damaged the connector at that point.
    I'm not 100% sure that this is your problem, but I guess that getting a new cable wouldn't be horribly expensive, so it might be a relatively easy thing to fix, or at least to test..
    Or possibly you broke the connector on the motherboard, but at least you've got your stereo-microscope to check it out with.

    • @CuriousMarc
      @CuriousMarc  Před 5 lety

      No, this one is a horizontal insertion connector. And if it were an LVDS cable problem, I would have lost a bit (or more), which means I would see a cyclical failure on the screen (many bands of colors not right, no sync, etc...), and not a localized column problem. So not the cable nor the connector (very unfortunately).

  • @neelsmostert
    @neelsmostert Před 5 lety

    Maybe time to move over to a less pretty but far more servicable pc with separate monitor. Go for an AMD cpu since they are far better suited to video editing.

  • @dannyuwu-b8m
    @dannyuwu-b8m Před 5 lety

    The screen is dead

  • @TheoSmith249
    @TheoSmith249 Před 5 lety

    contact Louis Rossman in NYC... check out his channel..

  • @Arnthorg
    @Arnthorg Před 5 lety +1

    lapel mic!

  • @fbonacic
    @fbonacic Před 5 lety

    too modern for you ;)

  • @olik136
    @olik136 Před 5 lety

    You can argue whether or not is a great idea to try to fix a mac--BUT for the first time in my life I have seen someone put all his icons on the right side of his desktop (and not on the left)- ThE aBsOluTe MaDmAn

    • @DandyDon1
      @DandyDon1 Před 5 lety

      That was only because Xerox did the exact opposite.... ;Þ

  • @timbro1
    @timbro1 Před 5 lety

    maybe you should buy a PC where you can swap out faulty parts easily and your monitor is not affixed to the computer

  • @afnDavid
    @afnDavid Před 5 lety +2

    Not only does Apple make it hard for people to repair their Apple devices.. Apple totally RESENTS people repairing their Apple devices!

  • @kivikallo4313
    @kivikallo4313 Před 5 lety

    Its apple. Of course it breaks.

  • @kbhasi
    @kbhasi Před 5 lety

    I've seen that you edit your videos using iMovie, and now I know where you edit them. I thought you were using a 2014 MacBook Pro, though.
    Ah yes, Apple. Competitively priced systems with exclusive OS and software, but fails to provide the level of support other manufacturers provide with their business-grade PCs. In my opinion, Apple used to be great before 2014…
    5:17 I see you were still able to use iMovie. Let me guess: You took out the hard drive and put it in another system?
    (ending) Oh, I see.

  • @tanaseav
    @tanaseav Před 5 lety

    it costs you about two times more than a PC, and it's complete and utter garbage. World Wide scam artists.. great job apple!.

  • @IceCreamKimi
    @IceCreamKimi Před 5 lety

    Normally when I watch your videos I can't find anything negative to say about them. The Alto restoration series was the reason I subscribed to your channel.
    However I cannot accept that this device is a great piece of engineering. For one you need to cut around the edges of the screen to open it which is ridiculous. Nothing but trouble can come from it. Also, the power supply getting so hot in open air that you had to put a pad underneath it makes me shudder at how hot it gets inside that cramped enclosure. It's really not a wonder why it failed.
    For an expensive computer, it's hard to accept that 3 years is a decent life span. Not everybody can afford to just go and buy a whole new computer every few years just because one component fails.

    • @CuriousMarc
      @CuriousMarc  Před 5 lety +2

      It's far superior engineering and attention to detail than most pieces of consumer electronics out there - probably bar none. I am actually glad a company can still do that and manage to be profitable despite having to recoup a higher engineering investment and the development cost of proprietary components. Which of course explains the obsessive control over repairs and parts supply that customers don't like - it's obviously designed to protect their margins and engineering investment. But that business reality does not detract anything from designs like these. HP and IBM have all but dropped the ball on well engineered consumer products. Apple is the only one left.

  • @notsogreat123
    @notsogreat123 Před 4 lety

    Apple has been substandard from day one. Thats why I DON'T COMPUTE ON FRUIT !!! That's exactly why I stay away from apple. They have ALWAYS modified standard parts to make sure you had to go to apple for parts. That doesn't fly with me.

  • @nerdful1
    @nerdful1 Před 5 lety

    I'll refer many to this video to explain why I will not attempt Apple service.
    No parts or documentation available. Arrogant hostile to the user.
    Louis Rossman found a niche in time but has to repair with used parts from junks. Only source of parts.
    Apple techs are not techs, just (up) salesmen, not allowed to repair more than replacement HD or memory.