iFixit - Active Questions With Device "Mac Desktop"

Macintosh Color Classic: モニターの歪み

Sat, 22 Feb 2025 03:09:44 -0700

モニターの表示が逆樽型に変形してしまう。

調整や修理方法を教えてください

⟐ Answered 2月 22, 2025 at 3:09 GMT-7

iMac Intel 27" Retina 5k Display: iMac 5K mid 2017のロジックボードの故障(iMac 5K mid 2017 logic board failure)

Tue, 18 May 2021 05:09:58 -0700

現在、imac 5K mid 2017を使っているのですが、usb-cが故障したのでAPPLE正規サービスプロバイダに持ち込んだところ、修理を拒否されてしまいました。

仕方が無いので、自分でロジックボードの交換をしたいのですが、どこでロジックボードを入手することが出来ますか？

中古でも販売していることを見かけることがありませんので

入手手段を教えて頂けますと幸いです。

Currently I am using imac 5K mid 2017, but since usb - c failed, I brought it to an APPLE authorized service provider, but I was refused repair.

Since there is no choice, I want to replace the logic board by myself, where can I get a logic board?

Because I do not see what I sell in second hand

It would be greatly appreciated if you could tell me how to obtain it.

⟐ Answer edited 5月 18, 2021 at 5:09 GMT-7

iMac Intel 27" EMC 2390: planning to upgrade my 10 years old iMac, help in choosing the parts!

Thu, 07 May 2026 22:33:43 -0700

Hi,,

I am planning to upgrade my iMac (27 inch - mid2010) which is now 10 years old and running on El Capitan 10.11.6 OS. Since its having a good CPU (i7 2.93) I am considering replacing the stock HDD (1TB) to an SSD, and maximising the RAM from 8GB to 32GB.

is this upgrade worth it? and will I notice a different when using it?
for the RAM upgrade, I think this part is the best option (iMac Intel 27" (Core i5 or i7) EMC 2390 (Mid 2010) Memory Maxxer RAM Upgrade Kit)?
for the SSD, I was reviewing this guide (Mac Intel 27" EMC 2390 Hard Drive Replacement), and I am confused about the parts options. the SSD Upgrade Bundle with Crucial MX500 SSD 1TB, or buying 2 TB SSD Segate Hybrid 3.5" Hard Drive with all the required tools separately which will almost cost the same. my concerns are:
- is the two SSD mentioned having the same performance?
- is the two SSD mentioned having the same certification with my iMac?
- is there any drawback for using Segate 2TB over Crucial 1TB?

This is my first time upgrading my iMac, and I really appreciate if you can guide me in selecting the best parts to get the most performance out of it for the longest period.

Regards,

⟐ Answered 5月 07, 2026 at 22:33 GMT-7

Mac Pro 2009-2012: No audio after upgrade to HD 5770

Sat, 02 May 2026 18:24:21 -0700

Upgraded to radeon hd 5770 did pram reset, DVI instead of mini DP and still not working please help

Mac mini (2024): How is the SSD installed

Sat, 02 May 2026 17:40:11 -0700

Is the SSD soldered?

⟐ Answer accepted 5月 02, 2026 at 17:40 GMT-7

iMac Intel 27" Retina 5K Display 2020: SDD ribbon cable replacement

Sat, 02 May 2026 11:48:43 -0700

I have a bare 820-01779-A logic board and am trying to identify a small ribbon cable connector on the screen-facing side of the board. There are no SATA connectors on the heatsink side as seen on 2019 boards. Can anyone identify what this ribbon connector is and whether it has any relation to SATA storage?

⟐ Answered 5月 02, 2026 at 11:48 GMT-7

Mac Pro Late 2013: Mac Pro wont power on, red LED?

Sat, 02 May 2026 05:18:52 -0700

Update:

First, sorry for the hiatus. I've been out of the business for a while. But I'm back!

Apple couldn't tell me anything. They offered me to pay a flat $500 fee, and they would replace anything that needed to be replaced untill it worked…

I ended up just selling it for parts…

So I have a Apple Mac Pro "Quad Core" 3.7 (Late 2013) that wont power on.

I do not know the history of the machine.

I plugged it in and got nothing, no beeps. no fan spinning, no response.

I do all the normal procedures, swapped ram, tried different SSD, reset SMC, tried different power cable and outlet. None of that worked.

I took the case off and found a bright red LED shinning.

So I started searching the internet, thinking that there MUST be some information about this red LED.... NOTHING!!!

So I proceeded to take the whole thing apart, took it down to bare bones to make sure everything was connected properly and to see if I could find any corrosion from any liquid damage or such.

While I was at it I re applied thermal paste on both the CPU and GPU.

Nothing appeared to be out of place, no damage to the board, all connections were secure.

I put it back together, powered it on, and still nothing, just the red LED...

WHAT IS WRONG WITH THIS THING!?

Please, if you have any idea what could be wrong, any suggestions, or any explanation about this red LED I would LOVE to hear it.

I'm totally baffled by this one...

Thanks in advanced,

Taylor

⟐ Answered 5月 02, 2026 at 5:18 GMT-7

iMac M1 24": Horizontal lines over iMac 24 screen

Sat, 02 May 2026 00:54:57 -0700

Hi,

I got horizontal lines over the display! During the warranty period they replaced the board ( it blacked out ) and now this is happening. They refused to replace the device saying out of warranty and asked to replace it :-|. They were not even sure that changing the display will fix the issue. I am hesitant to replace the screen as I am better off to buy a new one rather keep repairing the faulty product.

Is there any way to fix it?

Tried
- Reinstall the OS
- External Display = Works fine
- Reseating those 3 cables

Lines kind of flickers, may be some lose cables?

Please help

⟐ Commented 5月 02, 2026 at 0:54 GMT-7

iMac: Testing motherboard with no display?

Fri, 01 May 2026 15:24:55 -0700

I've got several 27" iMac motherboards. I have at least 2 that power up and have the startup sound, however I don't have a working LCD. I have two external monitors and I have a display port to DVI cable but when I connect up the external monitor all I get is either a black screen or a "check signal" message.

What am I missing? I thought the display port should function regardless of the presence of the LCD panel or GPU?

⟐ Commented 5月 01, 2026 at 15:24 GMT-7

iMac Intel 20": Wifi says it's connected but the internet

Tue, 28 Apr 2026 06:57:08 -0700

The wif says it's connected to the router but the internet doesn't work

⟐ Commented 4月 28, 2026 at 6:57 GMT-7

Mac Mini Unibody: 2011 Mac mini (Radeon 6630M) Way Underperforming?

Tue, 28 Apr 2026 05:04:36 -0700

I picked up one of these Macs cheap on ebay. I was formerly using a 2010 mini with the nVidia 320m integrated GPU for classic retro gaming. The system is connected to a TV and a PS4 controller. I mainly play emulated via OpenEMU, and also bootcamp into windows 10 to play GTA Vice City and GTA San Andreas.

Somehow I completely forgot that Apple ever made a discrete GPU Mac mini. Having realized that, I looked up GPU benchmarks and found that the 6630m GPU is kind of decent. Many times mower powerful than the 320m that came before it, or the Intel HD 4000 that came after it. Based on benchmarking the 6630m vs the minimum GPU system requirements for GTA4, I should be able to play that game on it too!

Those are the specs. Now here's the reality. The mini's GPU runs really good for half a minute or so? Then the fan in the mini maxes out, and the GPU throttles so bad, the framerate tanks. IN FACT, its so bad, that I had to dial back the graphics settings in GTA San Andreas to MATCH what I play on the nVidia 320m!!! So on a Mac with over 3x the GPU performance, I'm effectively getting the exact same amount of real-world performance.

My first thought was, Windows 10 must be broken, I should revert to Windows 7!
But after continued use, I'm not sure that's the issue. The second most obvious problem might be bad thermal paste? I know that replacing thermal paste on Macs is all the rage these days, but its not usually as effective as "reddit" would make it seem. But that said, I am in a case where I'm trying to max this machine out. So maybe its worth while to pop off the heat sink, clean it all down, and put some fresh paste on it? If I do go this route, is it worth buying some fancy kind of paste, or will any new, unopened paste be fine?

Any other thoughts on what might be going on? I would be very happy if I could use this mini to play GTA:SA at full native 1080p, and if I could play GTA4 at any decent, playable graphics level.

⟐ Commented 4月 28, 2026 at 5:04 GMT-7

iMac Intel 27" Retina 5k Display: Is Velcro or 3M Dual Lock a good substitute for display adhesive?

Sun, 26 Apr 2026 19:06:35 -0700

I have an early 2015 iMac with a fusion drive setup where the SSD expired. I plan to replace it with an SSD and use the hard drive from the configuration in an external enclosure. This is an aging system, though, and at some point I plan to convert the iMac into a monitor, so I'd like to be able to access to the internals without buying another set of adhesive strips. I saw a guide on using magnets for this, but it doesn't include any good way to attach the bottom of the screen. I'd like to know if 3M Dual Lock (a stronger Velcro substitute) is a viable alternative to the adhesive, and if so, how much do I need of it to hold the screen on well?

⟐ Commented 4月 26, 2026 at 19:06 GMT-7

iMac Intel: Lots of old parts - what to do with them?

Sat, 25 Apr 2026 05:55:47 -0700

I have several 27" iMacs in various states of disrepair as a result of repeatedly breaking the LCD on mine. What can I do with the parts?

Ideally I'd love to sell them for whatever I can get cause times are hard right? What can I do besides recycle them?

I have parts for 4 complete 27" 2015 iMacs including cases, power supplies, mother boards, speakers, fans, stands, etc....

Most of the electrical components either dont work or I have no way of testing them. I just want to get them off my desk at this point.

⟐ Answered 4月 25, 2026 at 5:55 GMT-7

iMac Intel 27" Retina 5K Display 2019: Microphone is broken after upgrading ssd

Mon, 20 Apr 2026 15:15:48 -0700

Any idea where i can get that part?

the ribbon is so fragile, looks like it broke

thanks

After changing the microphone for a new one it is still the same problem, no idea what happened, i was being very careful inserting the flex cable on the board.. when removing the original one i pulled it instead of removing the tiny latch because i did not know

Any idea?

Thanks

⟐ Answer accepted 4月 20, 2026 at 15:15 GMT-7

iMac Intel 27" EMC 2639: Slow Write Speed (2TB Crucial Bx500 SSD) No Matter What

Sun, 19 Apr 2026 12:09:17 -0700

Hello,

I have a late 2013 27" that I replaced the failing HDD with a new 2TB Crucial Bx500 SSD.

Write speeds are an abysmal 20-40MB/s no mattter what.

I have also replaced the SATA cable AND enabled Trim.

I have tried also formatting the drive to exFat and then back to APFS with a clean install of Catalina, and then migrated the data again with migration assistant.

Originally, I thought the drive or cable was bad, so I replaced both again.

The issue persists. Write speeds hover from 20-40 MB/s.

Thank you for your consideration and help. I will be sure to respond as promptly as possible.

⟐ Commented 4月 19, 2026 at 12:09 GMT-7

iMac Intel 21.5" EMC 2428: iMac 2011 only #4 diagnostic LED is lit problem after upgrade

Thu, 16 Apr 2026 07:05:48 -0700

Hi everyone, I am kind of new here so here is my little story which I am having at the moment.
I have been diagnosing my iMac 21 mid 2011 for about a month, and I cannot get it to start back up no matter anything that I've tried and diagnosed, I only get #4 diagnostic LED to lit which is for LCD panel/inverter, nothing else.

First I thought it was the PSU on it's way to failure from age, but purchasing a new replacement didn't made any difference.

Then I've thought the internal connector which goes from power supply to the mb (motherboard) which gives it power and it may have been damaged while I disconnected it from the PSU, and I may have to get it, nothing changed.
But, one interesting thing is that both PSU's giving high pitched noise and "clicks" one or 2 per 3 seconds or so. I can record it as a voice memo if needed.
After that I thought the iMac's chassis may shorting components inside, so I measured voltages with the beeper on multi, everything is fine on that side. (no beeps)

As motherboards rarely fail, I also purchased a replacement, which also did no difference.

I think I have verified everything that could come to my mind, and I simply cannot get it power on no matter what I have tried. I am mostly specialist in laptops, so this is my first attempt and experience on getting inside an iMac.
I really hate throwing electronics away, I always try to diagnose them in every possible way. I have no one to ask and who could assist me in helping with this, as everyone who I know are always with their stuff.

If any more info is needed or I may have something missed during diagnostics, please please let me know, I will very much appreciate it.

⟐ Commented 4月 16, 2026 at 7:05 GMT-7

iMac Intel 27" EMC 2429: How to get rid of iCloud lock?

Fri, 10 Apr 2026 20:06:02 -0700

I have a 2011 iMac but It was iCloud locked and when I go to do a clean install it has an EFI lock. How Can I get rid of this?

⟐ Commented 4月 10, 2026 at 20:06 GMT-7

Mac mini (2024): How to repair or replace the power button cable and where to get part?

Wed, 08 Apr 2026 11:16:06 -0700

While upgrading the SSD I was not careful and pulled the power button cable out of the connector such that I now have two bare pins and the plastic connector they go into is torn up. Is the a part number for just the power button cable and where can I order?

⟐ Answer edited 4月 08, 2026 at 11:16 GMT-7

iMac Intel 21.5": Replacing my ssd drive

Sun, 05 Apr 2026 10:21:47 -0700

My drive is dead. How easy is it to replace (or is it worth replacing)? If I do replace it, can I restore my system from a backup of the drive or do I need to install a new operating system on the new drive? It is a 21.5 “ 2.7GHz Intel i5.

iMac: I have no sound in chrome on my iMac

Sat, 04 Apr 2026 05:38:11 -0700

I currently have no sound in Chrome on my IMAc at startup

⟐ Commented 4月 04, 2026 at 5:38 GMT-7