happened to it. Today it doesn't turn on anymore, still seeing the back ports light from HDMI blinking sometimes when i try to turn on. Recently updated now using El Capitain 10.11.04

Reset the SMC on Mac desktop computers

Follow these steps for iMac, Mac mini, Mac Pro, and Xserve.

• Shut down the Mac.
• Unplug the power cord.
• Wait 15 seconds.
• Plug the power cord back in.
• Wait 5 seconds, then press the power button to turn on the Mac.

Any other idea to fix the problem and make the computer turn on again?

Please help.

Sorry Jozo but its a Mac Pro there isn’t a keyboard :( And its not turning on, I just get back from apple assistance nobody knows about it and they ask me 10 days to give me a feed back.

I’m a mac fan for 10 years and after 8 computers I need to say this time was too much ..... time to get back to PC

If I can give a tip, DON’T BUY THE NEW MAC PRO and another one..... don’t use El Capitain 10.11.4

⟐ Commented 十二月 06, 2022 at 5:36 GMT-7

I want to update my Mac pro a little

now there is an opportunity to buy DDR3 2400 (as in the picture)

Can you please tell me if I can use such a memory? (factory memory has a lower frequency)

Here is the label

⟐ Answered 三月 04, 2026 at 7:29 GMT-7

STEP 23.

I can not remove the screws . A screw is changed shape ....

What can I do ? Any help?. I am going wrong ..

Thanks so much...!

⟐ Commented 十二月 12, 2020 at 8:09 GMT-7

Do you think I may have any problems with hardware start-up checks or similar after putting it back together, but with the wi-fi card expunged from the machine?

====================================================

UPDATE 4 Feb 2014

Thanks for the comments:

There are currently more than 34 published academic studies showing that wi-fi destroys or damages genomes / DNA. If you have an ethernet connection, why would you want to radiate your brain and body? Just google: "wi-fi destroys DNA" if interested. Fortunately, Apple has made it quite easy to remove.

For those following the thread ... I purchased a T5 torx screwdriver which is needed for the removal. The process is quite simple:

1. Take off the outer lid of the Mac Pro

2. Remove the round plastic black hat (with a diameter about 120mm) on the top: use a plastic spludgee (or pocket knife if more daring), and shove it up between the Mac Pro body and the black hat, ... the hat is just stuck on with some pressure glue, so work your way around levering it off, and eventually the whole cap just pops off. [ It sticks back on again when you press it down.]

3. Then follow the photos on the site here to remove the Airport card. There are 8 Torx T5 screws to remove, as well as 4 antennae connectors to unplug ... and you are done ... then lift up the card, --> the Airport card is sitting on the underside. Wiggle out the Airport card from its connector on the underside. All done.

Put back together ... Start up Mac and everything works fine ... The Finder Menubar status icons now show:

x -> Bluetooth Not available

x -> Wifi: No hardware installed.

How good is that! Wonderful and delighted!!

⟐ Answer accepted 一月 25, 2018 at 4:37 GMT-7

⟐ Commented 三月 10, 2026 at 20:40 GMT-7

I rushed to find a solution for the overheating MP6.1. I have the impression that OCLP, in combination with newer versions of OSX, which are more demanding in terms of system resources (RAM, CPU, etc.), cause older computers to work harder. I started looking for a solution and, using 3D and an additional original fan from the MP6.1, I achieved quite satisfactory results without the noise of an F-35 taking off. To improve airflow, I removed the original bottom cover, and the second fan is powered by a cheap 4-pin PWM controller. I soldered the cables into the fan's test pins and added a PVC mesh filter between the two original MP 6.1 fan diffusers.. At the moment, such a fan can be bought in the UK for £19, which is quite reasonable. If necessary, I also run TG pro on low settings so as not to drown out my thoughts :) I think that the whole thing doesn't look particularly awful and is quite compact compared to other designs 🤔

⟐ Commented 十月 06, 2025 at 12:24 GMT-7

as seen in my own machine (and researched in many web-discussions), this Mac Pro 6,1 develops great amounts of heat alone from its "PCIe Diode"-Circuit.

As I know you iFixit-people as honest and sincere in researching and adressing repairability-issues, I want to ask especially all of you "trashcan"-users, if anybody of you has found out a way of physically modifiying this specific semiconductor with a heatsink or any other physical workaround - to push it's temperature, which on summer-days easily exceeds the recommended 70 degrees C (a value, which, by its manufacturer, is rated as highest working value).

Up to today, I personally use the software tool "TG pro" to "auto boost" the internal fan to 35% of it`s maximum of 1900 rpm always, when the PCIe diode temp goes over 70 degree C. (To imply this, go to "Auto Boost Rules", add a new rule by pressing "+", select "35" / "PCIs Switch Diode" / 70 C)

But nevertheless - besides these software solutions - hopefully some of you have found effective ways to physically duck the temperature below this critical value (without ramping up the fan...)?

Your experiences are valued! Thank you very much!

⟐ Commented 九月 11, 2023 at 2:32 GMT-7

I have a Mac Pro (late 2013) which I need TG Pro (or Macs Fan Control) to control the fan speed. - Without it is constantly high.

I have observed that the sensor for “GPU 2/B Die” is 0/missing in TG Pro and istats menu. I assume that the high fan speed is a precaution by the SMC as it cannot read the temperature.

Do you have any idea on how to fix it? - The GPUs seem otherwise unaffected.

Best,

Thomas

⟐ Commented 九月 16, 2022 at 14:18 GMT-7

I examined more closely and it looks like the housing for the screw has come loose from the heatsink itself -- so it spins and spins with the screw, instead of releasing the screw as it turns. Does anyone have any experience with something like this? Thinking of getting some crazy glue with a long nozzle and trying to apply some glue to the housing to get it to stick the the heatsink again.

⟐ Answer deleted 五月 10, 2022 at 11:56 GMT-7

Power on , ok, but few minutes shuts down

And I try to power on and nothing, only lights on ports like on video

If turn off, for a long time, turn on again, but some minutes turn off again.

⟐ Answered 十月 02, 2020 at 4:15 GMT-7

I have 32GB of ram, and 1 TB of storage.

I have had the issue when I’ve been close to 80% of capacity and also when much lower. The ‘fullness’ factor seems to not affect the issue.

⟐ Commented 七月 27, 2020 at 12:03 GMT-7

Once the failed I/O board was discovered to be the cause of the issue, we reassembled the machine with a new I/O board and all of the other original components. It now powers on and boots into the user account successfully. I just found out that all of the users audio plugins for various music editing software are now disabled - they are seeing the machine as an unrecognized/unlicensed machine. Is this something that could be caused by the disassembly and reassembly process I performed? Thanks!

⟐ Answered 一月 23, 2019 at 17:43 GMT-7

I believes by an accident, I have ripped out the sensors from the logic board and now the fan run at full speed at all time. Searching the internet, I’ve found the reason why as an SMD component are missing from the board. Below is the SMD IC that is missing. Could someone help me to identify the IC so I can find a way to solder it back to the board? I use TG Pro to check on the sensors and found the Ambient 1 & Ambient Air Sensor are missing. Much appreciate if anyone can help to give me a hint.

⟐ Edited by author 十月 25, 2023 at 18:36 GMT-7

⟐ Answered 六月 06, 2021 at 0:37 GMT-7

Update: I have managed to opened up and fan and gosh, the amount of dirt accumulated is ridiculous. Managed to cleaned up all the dirt and now my fan is barely activating. i shall monitor it for a while to see whether it starts to heat up again before i change the fan.

⟐ Answer accepted 七月 24, 2021 at 18:54 GMT-7

I have a project to create a clear case for my old 2013 Mac Pro, does anyone know where the magnetic lid sensor is located and where the magnet is located on the aluminium cylinder? (I am assuming it uses a magnetic lid sensor like MacBooks)

I need it in order to make sure the bloody thing runs with the new case I plan to build.

Magnet paper might work but I am not sure

Cheers

⟐ Answer edited 十月 06, 2024 at 6:52 GMT-7

⟐ Commented 六月 24, 2024 at 10:49 GMT-7

Any recommendations as what to do or buy? And where to go for that kind of purchase?

⟐ Answer edited 十二月 23, 2023 at 17:04 GMT-7

⟐ Commented 十月 04, 2023 at 5:49 GMT-7

These symptoms, can they also correspond to the damaged power supply? I have already done everything, in addition, it was once in the technical service when the ignition began to fail, and they did not find anything.

⟐ Answer accepted 八月 09, 2022 at 14:53 GMT-7