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Modelo A1418 / Finales de 2013 / 2.7 y 2.9 GHz Procesador Core i5 o 3.1 GHz Core i7

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Why is my computer making clicking/ticking noises?

Hello,

My iMac is making weird clicking/ticking noises. Thought it was the hard drive, so I put in an SSD, and went ahead and upgraded memory to 16GB, which didn’t solve the problem.

I can reproduce the sound by running a GPU benchmark, or just opening every app, and will continue for up to 60 seconds after I shut down and unplug the machine.

Thought it was the power supply, but I replaced that and still clicking.

I don’t think it’s the fan because I can spin it up to 2800 rpm with smcFanControl, and it has no effect on the sound. Spinning up the fans doesn’t cause the sound to speed up or slow down, or change in any way.

I don’t think it’s the speakers because if it was, the sound should stop the second the machine shuts down, or at the very least the second it is unplugged, but the noise persists.

I’m out of ideas. I just want the clicking to stop, and I don’t know what to fix that will make it stop.

Here’s a link to a video of the noises the computer is making. This is a video I took of this specific machine.

https://streamable.com/mcj0m

Contesta esta pregunta Yo también tengo este problema

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Your hard drive is starting to die create a backup ASAP, so you don’t lose any of your data.

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Lets try this reboot your system and hold the Shift key to get into Safe Mode. See if the clicking stops then. If its still happening lets try just starting up in Target Disk Mode holding the T key. The idea here is to pull away different parts of the OS to see what element is the source. In the case of Target Display Mode we are only running off of the systems BIOS kernel (EFI) no OS software is being loaded.

Let us know what you discover!

Reference: Mac startup key combinations

Update (08/17/2018)

Here’s the IFIXIT guide to replace the power supply: Reemplazo de la fuente de alimentación de iMac Intel 21.5" EMC 2638 and here’s the needed part: iMac Intel 21.5" (Late 2012-2019) Power Supply.

you do need to be very careful when removing the display. Make sure you use the pizza cuter tool and picks. And don’t forget to order the adhesive strips (I would get two sets just in case!)

Imagen de iMac Intel 21.5" (Late 2012-2019) Power Supply

Producto

iMac Intel 21.5" (Late 2012-2019) Power Supply

$129.99

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Clicking in both Safe Mode and Target Disk Mode, though clicking was considerably quieter in Target Disk Mode.

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Then your issue is a bad power supply. You'll need to replace it.

But! Before you do you need to check your house wiring! Make sure the outlet you are using is properly wired 3 prong and the ground line is attached. Use an outlet tester to check things. In the basement check your circuit make sure its 20Amp and it does not service anything power hungry like a refrigerator or AC. Ideally, just your computer and its peripherals. Do make sure you have a surge suppressor and if you can I strongly recommend getting a good UPS.

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Replaced power supply, still clicks. Any other ideas?

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Did you ever find out what caused the ticking noise?

Same thing is happening with my iMac 27”… but not constant… does it for a little while… then not at all for a day… almost sound like some type of relay switching on and off?

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Patrick - It sounds like you have some debris within the fan unit or the bearing is going. As you didn't tell us your exact system I can't offer much more.

How about creating your own question with all of your details and what you've tried.

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do you have a random shutdown issue? is it a late 2012 27inch imac?

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How about creating your own question with your systems details and whats happening. You have a very different issue than what Danny

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hey I have this issue with this mac, and I have all of my stuff on it, it will reboot to grey screen then shutdown about half way through the load bar.

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After saying I’m also having this issue, I figured it out. Your GPU is overheating. The heat sync inside only covers the CPU, so your GPU is exposed and basically on its own.

My advice is to download Mac Fan Control, then set the censor to your GPU, and set the threshold for about 72 C.

I’m actually considering modifying the casing to allow fresh air in. That’s the main design flaw with these models.

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@jerrid_foiles - As we don't know which model you've jump to a conclusion that's flawed!

The i5 model uses the Intel Iris onboard the CPU graphics engine. the i7 systems offer a dedicated AMD GeForce GT 750 GPU which is soldered to the logic board and does have its own cooler.

I strongly recommend you not alter the case!!

You likely just have dust build up and you may need to clean off the old thermal paste and apply a fresh coat of thermal paste. I would recommend installed a good thermal monitoring app like TG Pro which will allow you to see more clearly what's happening.

You maybe pushing your system harder than it was intended to do. I would also monitor Activity Monitor to trace what the CPU and GPU are doing.

It maybe time to upgrade your system to a more powerful system.

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Danny Arenales estará eternamente agradecido.
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