Ana içeriğe geç

Videoya Genel Bakış

Giriş

I have made a video for the first time if your interested have look there.

Bu teardown bir tamir kılavuzu değildir. iMac Intel 21.5" Retina 4K Display 2019 cihazınızı onarmak için, servis kılavuzumuzu kullanın.

  1. Apple has surprised us all by unveiling some new iMacs without a Keynote.
    • Apple has surprised us all by unveiling some new iMacs without a Keynote.

    • But what has surprised us most by far are the big specs this little iMac packs.

    • 8th generation Intel Core i3 quad-core processor clocked at 3.6GHz

    • 8GB of DDR4 RAM Running at a speed of 2.400MHz

    • A mediocre 1 TB mechanical hard disk drive.

    • AMD Radeon Pro 555X graphics card with 2GB of GDDR5 video RAM.

    • And of course the gorgeous 4K Retina Display with support for the P3 color gamut.

  2. Opening the iMac has never been easier with ifixit opening tool. I did use these 6 tools
    • Opening the iMac has never been easier with ifixit opening tool.

    • I did use these 6 tools

  3. It was really disappointing to see nothing is changed in this iMac in  last 2 years. It was really disappointing to see nothing is changed in this iMac in  last 2 years.
    • It was really disappointing to see nothing is changed in this iMac in last 2 years.

  4. it seems they have changed the LCD connecters only The large LCD screen is made by LG Display.
    • it seems they have changed the LCD connecters only

    • The large LCD screen is made by LG Display.

  5. Only wifi and bluetooth module in now fixed on the board. Hard drive still same Hitachi 5400 rpm and fan still the same as you can see Only wifi and bluetooth module in now fixed on the board. Hard drive still same Hitachi 5400 rpm and fan still the same as you can see Only wifi and bluetooth module in now fixed on the board. Hard drive still same Hitachi 5400 rpm and fan still the same as you can see
    • Only wifi and bluetooth module in now fixed on the board. Hard drive still same Hitachi 5400 rpm and fan still the same as you can see

  6. A protection cover for the RAMs which I think is not necessary for a fixed device like this and as you know 2666 MHz DDR4 rams are little higher speed than the 2017 model. A protection cover for the RAMs which I think is not necessary for a fixed device like this and as you know 2666 MHz DDR4 rams are little higher speed than the 2017 model. A protection cover for the RAMs which I think is not necessary for a fixed device like this and as you know 2666 MHz DDR4 rams are little higher speed than the 2017 model.
    • A protection cover for the RAMs which I think is not necessary for a fixed device like this and as you know 2666 MHz DDR4 rams are little higher speed than the 2017 model.

    That cover’s forr EMC shielding, so that no internal radio waves affect the chips. Or maybe for grounding protection?

    Jessica Parnelli Fawkes - Yanıt

    Yes! It’s for Electro Motive Interference (EMI)

    If your car came with air bags you wouldn’t take them out would you? EMI shielding is basically the same thing! Having a purpose to protect you (or in this case other internal parts). I would strongly recommend putting the shielding back.

    Dan -

    This waves where there in last year model and years before that Apple found it now? I dont think so

    Babak - Yanıt

    The shield is a Faraday cage to limit either emissions in or out!

    Designing EMI protection is a complex process. You need to first make sure you are containing it which the outer aluminums case and the shield on the back of the LCD offers so it is not interfering with other devices you have on your desk or room. Then within your own device you need to protect some areas from emissions from other parts within. This then gets into the glass is half full or half empty problem! Protecting the more sensitive parts or controlling the more emissive parts.

    The last issue here is when Apple did its testing it likely noted the higher frequency parts needed more protection. As Apple uses the same logic board across all of the CPU/RAM configs it likely made sense to put the shield in all of the configs to make sure the assembly line was consistent.

    As we don’t know what Apples EMI testing encountered it makes sense to put the shield back on if you needed to alter the RAM config. You also will need to make sure you match the specs what your system is using for RAM.

    Dan -

    It’s not clear wether the RAM is 2400 or 2666MHz. In this step it says one thing, on top of the page it says another one.

    Leonardo - Yanıt

    In apple website if you see there are 3 different speeds 2133. 2400.2666 in the iMac 21’

    https://www.apple.com/shop/buy-mac/imac

    Babak -

  7. Insert wisdom here. Insert wisdom here.
    • Insert wisdom here.

  8. Power supply If not handled correctly, the power supply can do bodily harm. If not handled correctly, the power supply can do bodily harm.
    • Power supply

    • If not handled correctly, the power supply can do bodily harm.

Babak

Üyelik tarihi: 02-03-2016

173 İtibar

1 Kılavuz yazıldı

Takım

Hedmontech Trading L.L.c Hedmontech Trading L.L.c üyesi

Business

1 Üye

1 Kılavuz yazıldı

15 Yorum

Dear Good day

ill purchase new 21 2019 it can upgrade ram 2666GHz 32GB

yes or no

Mohamed Ghaly - Yanıt

yes you can upgrade to 64 GB too if you have access to OWC company

Babak -

Hi Mohammad:

It is possible to make it 32 GB but you need to be a little gentle when doing that. feel free to ask me here if you face any issue. I actully made a video for the first time doing it you can have look at it to get some idea.

https://www.youtube.com/watch?v=IPjkR8Eo...

Babak - Yanıt

Goodness me, they didn’t cover the PSU! How disgraceful of Apple!

Jessica Parnelli Fawkes - Yanıt

they never cover that since day first of creating iMacs

Babak -

They did not evet cover the one of Mac Plus, causing some extra noise after years of heating.

Alejandro Rivero -

The question I have is this: the 2017 iMac 21.5” had a modular CPU assembly, meaning it was socketed and could be replaced or upgraded. Does the 2019 model have this feature? Or is the processor soldered directly to the board?

Klieb - Yanıt

I have this question too. Please, help us!

Suryo Brahmantyo -

I haven’t check yet sorry.

Babak -

My understanding is that with the base model’s i3, the processor is soldered. With the i5 and i7 is socketed.

Leonardo -

A question I have, nobody has taken yet the courage of sawing a door for memory access? Now that it is protected, one can do the drill, er, carefully.

Alejandro Rivero - Yanıt

that will look very ugly specially when the door is going to be seen by others

Babak -

Is it possible to upgrade this mac from the core i3 later to a core i9 since it’s now using the socket FCLGA1151 ?

alejoruy - Yanıt

No I don’t think because of first PSU and second the connectors on the board

Babak -

@babak400 - Very well done and useful!

Dan - Yanıt

Yorum Ekle

İstatistikleri Görüntüle:

Son 24 Saat: 42

Son 7 Gün: 234

Son 30 Gün: 1,210

Her zaman: 6,671