Introducción
He hecho un video por primera vez. Si estás interesado échale un vistazo.
Resumen del Video
-
-
Procesador de cuatro núcleos Intel Core i3 de octava generación a 3,6 GHz
-
8 GB de RAM DDR4 funcionando a una velocidad de 2400MHz
-
Un mediocre disco duro mecánico de 1 TB.
-
Tarjeta gráfica AMD Radeon Pro 555X con 2GB de RAM de video GDDR5.
-
Y, por supuesto, la magnífica pantalla Retina 4K compatible con la gama de colores P3.
-
-
-
-
Solo el módulo wifi y bluetooth están ahora fijos en la placa. El disco duro sigue siendo el mismo Hitachi 5400 rpm y el ventilador sigue siendo el mismo que puedes ver
Today I opened my 2019 21.5 model (i5-8500 CPU) to upgrqade the RAM and I checked which Thunderbolt-chip was there. It is an Intel JHL7540 “Titan Ridge”, which is the 2nd gen Thunderbolt 3 chipset.
https://ark.intel.com/content/www/de/de/...
It supports DP1.4 and two separate TB3 ports, so I “suppose” this means, it should be possible to have an ext. 5k Display and fast TB3-storage w/o bandwidth problems.
-
-
-
Una cubierta de protección para las memorias RAM que creo que no es necesaria para un dispositivo fijo como este y, como sabes, las memorias RAM DDR4 de 2666 MHz son un poco más rápidas que el modelo 2017.
That cover’s forr EMC shielding, so that no internal radio waves affect the chips. Or maybe for grounding protection?
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
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.
In apple website if you see there are 3 different speeds 2133. 2400.2666 in the iMac 21’
Babak -
-
-
-
Fuente de alimentación
-
Si no se maneja correctamente, la fuente de alimentación puede causar daños corporales.
-
Un agradecimiento especial a estos traductores:
100%
¡ Francisco Javier Saiz Esteban nos está ayudando a reparar el mundo! ¿Quieres contribuir?
Empezar a traducir ›
Equipo
26 comentarios
Dear Good day
ill purchase new 21 2019 it can upgrade ram 2666GHz 32GB
yes or no
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.
Goodness me, they didn’t cover the PSU! How disgraceful of Apple!
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.
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?
I have this question too. Please, help us!
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.
that will look very ugly specially when the door is going to be seen by others
Babak -
Can the hard drive be replaced by an SSD?
Yes Evelyn easily and make ur iMac faster
Babak -
What thermal sensor cables or others are needed to upgrade to SSD drive? I have 1TB 54— RPM STATA Drive, no PCI
Frnk nothing u need else than a fast SSD thats it. If you want u can watch my utube vid an see all by urself . Good luck
Babak -
Hi….
I have upgraded my imac from 8gb ram to 64 ram and the hd to ssd hard drive…. after finishing all the instructions I have replaced everything back as it was but unfortunately the screen is totally black and I can see nothing on it… so I thought I might have done something wrong so I have to try again to reconnect everything but still the same … then I connected it to external monitor and it worked just fine… but with the original screen everything is black… so I tried to change the LVDS cable as in one article they have said it might be ruined and still facing the same issue…. I have even placed the old RAM and still same … do you have any suggestions to solve this issue…
thanks
Sorry to hear that Ahmad I think the prying tool you used was a little longer than what it was suppose to be and u damaged the screen flat cables. Try to push the flat cables at the top of ur screen see any improvement. Apart from LVDS there is another cable for backlight going to the screen see if that connector is correctly connected. Sometimes they get disconnected internally from their cable. I did have a case like that
Babak -
Hi, i have a solution. Depending on where you live sell it to me for cheap. I guess it's unrepairable and i need one as a build server for my software in the basement.
Hi threre! I Have a new imac 2019 4k 21,5… I have changed to an ssd drive but I can’t make Bootcamp work properly again. It’s there a way to make it work again or remake the fusion drive with an ssd installed? I need to install Windows and I was thinking in upgrade the Nvme ssd… but looking the pictures of the motherboard I couldn’t find the module on it… I’m scarred because it seems to be soldered on board and cannot be upgraded, is this true? Please help me… cesar@galdamesbert.cl
with the ssd it should work same as the fusion drive check what is wrong with the bootcamp, you may need to update the bootcamp. but in case your want to go back it is possible to make it same as before. there is a video in youtube look at it and create your fusion drive accordingly. link is: https://www.youtube.com/watch?v=c7ZYwLl8...
Babak -
