Powe supply clicking when i plug in mac pro

why does my mac boot up when i plug it in?
when it boots the power supply starts clicking, like a fan hitting something, when i pull the plug it slows down slowly, aany ideas?
thanks

i have the same problem, if it could be considered a problem.
It power up instantly when i plug in the cable, without pushing the start button. But i have no fan clicks.
I did a search on the web and found many others messages about this. I called the support and did a SMC reset, but it still power up when i plug it. Hope this will not produce any damage in the future.

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Power Supply Fan Always Runs Full Throttle - Mac Pro (Early 2008)

My Mac Pro has been almost flawless since I purchased it new in February 2008. I did not purchase the AppleCare because I rather naively assumed at the time that my shiny new Mac Pro was an invincible machine. (I was seduced by Apple after all!) Well, that was when I was younger (about 2.5 years ago) and before I knew about the actual cost of things like Logic Boards and Apple Power Supplies... Now the $250 AppleCare lifeline seems like a bargain!
The Problem:
1 week after installing Windows 7 64-bit to a separate internal hard drive using boot camp 3.1, my Mac Pro was playing music from the local iTunes library in Snow Leopard when the power supply fan revved up to 2760 rpm! I immediately tried rebooting the machine, resetting the PRAM and SMC several times, but the fans continue to throttle up to almost 2800 rpm within seconds of powering on the Mac.
I have run the Apple Hardware Test several times and every time it generates the same error code within 1 loop of either the extended or regular test:
4SNS/1/40000001: lp0C-0.000
An Apple Support technician was kind enough to "sneak" me a little bit of information about the error code. He told me the message is Logic Board Sensor related and could be caused by a faulty Logic Board, Sensor Board (Ambient Board?), Power Supply or possibly a faulty sensor that might be repairable.
Emotion:
Other than my 6 month old daughter eyeing the Mac Pro with the same suspicion she reserves for the Dyson vacuum cleaner, the computer still works fine--it hasn’t crashed in either Windows 7 64-bit or Snow Leopard and I haven’t noticed any unusual behavior. I had one other problem with this computer about 1 year ago when I installed Vista using boot camp. About a week after the Vista install, the OEM ATI HD 2600 XT completely died and I replaced it with a GTX 285.
I have grown a little suspicious about the efficiency of boot camp in the Windows environment, but perhaps the 2 separate boot camp installs and subsequent hardware failures are coincidence or related to the hardware issue I am yet to resolve...?
Hopefully, someone in the Apple community will offer guidance to a swift and economical solution!
Thank you in advance for your time.
Some Data:
iStat Pro Info
CPU
User: 0%
Nice: 0%
Sys: 0%
Idle: 100%
TEMPs (in Fahrenheit) - There was no entry for Power Supply Temp in iStat!
HD1: 90
HD2: 90
HD3: 92
HD4: 92
CPUA: 88
CPUA: 86
CPUB: 88
CPUB: 86
Ambient: 76
Expansion Slots: 94
HD Bay1: 83
HD Bay2: 83
HD Bay3: 83
Hd Bay4: 81
Mem Bank A1: 106
Mem Bank A2: 99
Mem Bank A3: 99
Mem Bank B1: 92
Mem Bank B2: 92
Mem Bank B3: 94
Mem Module A1: 130
Mem Module A2: 126
Northbridge: 106
FAN SPEED (rpm)
Power Supply: 2760
Exhaust: 600
CPU Fan: 500
HD/Expansion: 800
Hardware Overview
Model Name: Mac Pro
Model Identifier: MacPro3,1
Processor Name: Quad-Core Intel Xeon
Processor Speed: 2.8 GHz
Number Of Processors: 2
Total Number Of Cores: 8
L2 Cache (per processor): 12 MB
Memory: 2 GB
Bus Speed: 1.6 GHz
Boot ROM Version: MP31.006C.B05
SMC Version (system): 1.25f4

I had the same problem. The solution was replacing the Power Supply.
Because i had Apple Care there where no costs.

I have a powermac dual g5 2.0 that wont start up.When I plug it in I get the click from the power supply. When I hit the start button, the white led on the front panel lights up and stays lit. No whir sound from the hard drive or the fan. No lights on the

I have a powermac dual g5 2.0 that wont start up.When I plug it in I get the click from the power supply. When I hit the start button, the white led on the front panel lights up and stays lit. No whir sound from the hard drive or the fan. No lights on the motherboard

The click usually indicates a big problem, but...
How to reset the SMU/PMU on a Power Mac G5 (Late 2004) or Power Mac G5 (Late 2005) ...
http://support.apple.com/kb/HT1436
Earlier G3, G4, G5 models...
http://support.apple.com/kb/HT1939
Might be time to replace the PRAM Battery, 4 years is close to their lifespan, far less if ever without AC power, & can cause strange startup problems...
See which one your G5 has...
http://eshop.macsales.com/item/Newer%20Technology/CR2032/
http://eshop.macsales.com/item/Newer%20Technology/BAA36VPRAM/

TS1367 I upgraded my cpu but when i start my mac pro it won't power on. I put back the original cpu, but still, it won't power on? What is wrong?

M y mac pro won't power on. I upgraded my cpu, try putting bac k the original cpu but still it won't power on, what is wrong with my mac pro?
Shear

Reinstall Lion, Mountain Lion, or Mavericks without erasing drive
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported then click on the Repair Permissions button. When the process is completed, then quit DU and return to the main menu. Select Restart from the Apple menu.
Reinstall Mountain Lion or Mavericks
OS X Mavericks- Reinstall OS X
OS X Mountain Lion- Reinstall OS X
Note: You will need an active Internet connection. I suggest using Ethernet
if possible because it is three times faster than wireless.

My ipad mini has water damage but when I plug into wall it says to connect to itunes. When I plug into Mac nothing happens. Not even a charging sign and nothing happens with itunes. Computer doesn't recognize it's plugged in.

my ipad mini has water damage but when I plug into wall it says to connect to itunes. When I plug into Mac nothing happens. Not even a charging sign and nothing happens with itunes. Computer doesn't recognize it's plugged in.

If moisture got inside, it may have shorted the iPad's electronics.
Solutions for wet iPad.
http://www.gazelle.com/how-to/ipad/ipad-recover-from-water-damage
http://www.knowyourmobile.com/appleiphone/ipad/ipaduserguides/701079/how_to_fix_ an_ipad_if_it_gets_wet.html
 Cheers, Tom

When i active my mac pro all i get is a white screen and it loading .. and when it fully loaded it turns off and the same thing keep on happening again

when i active my mac pro all i get is a white screen and it loading and when it fully load its turn off , and it keep on doing the same thing for hours

Hi Shahenaz,
It's a little difficult to understand exactly what's going on with your mac based on the description you gave. Is there anything else you could add? Is it stuck in a reboot loop? Or is it just showing a white screen forever?
I had pretty much the same problem a few days ago, and was worried my mac was screwed permanently, but I got it fixed up no problem!
Follow these steps to try and troubleshoot/fix the problem.
1. Boot into OSX Recovery Mode
First, turn off your Mac. If it isn't responding, or is stuck in a reboot loop, just hold down the power button until it turns off, and you hear the fans stop. Then boot it while holding the Command and R keys. If it successfully boots into OSX Recovery Mode, continue with this step. If not, skip to step two. (My Mac couldn't successfully boot into the recovery mode, so I had to go to step 2)
Select "Disk Utility" from the list of options, and find your built in hard drive from the list on the left. Usually there are two listings/names for your drive. The first should be something like "500GB longchainoflettersnumbers Media". Then the one below will be a little easier on the eyes, named Macintosh HD, if you haven't changed its name. That's the one you want, click it.
Now go to the "First Aid" tab. Click on the "Verify Disk" button in the bottom right corner, and let it do its thing. Once that's done, hit repair disk, also in the bottom right corner. If your disk is corrupted, you may need to run the repair process several times, before it comes up completely clean.
Once this is done, select Shut Down from the Apple menu and, once your Mac is completely off, turn it back on like normal. If it works, great. If not, proceed to step two.
2. SafeBoot
Sometimes, when a mac is acting up and doesn't want to start, all it takes is a safe boot, followed by a regular restart. Or maybe you recently installed a program that either has malicious or errored coding that's causing your troubles. This is where Safe Boot comes in.
Turn off your mac, and reboot it while holding Shift. (If you want to see the process that's going on in the background, boot while holding Shift, Command, and V. This will enter something called Verbose Mode).
If it boots successfully into Safe Mode, great. If you believe that there's a particular program that you recently downloaded that might be causing your trouble, now's the time to delete it. If not, just reboot normally and see if it works! If it doesn't, or if your Mac didn't even Safe Boot like mine, proceed to step 3.
3. Fsck!
For this step, you're going to be booting your mac into Single User Mode. I'm not going to go into details as to what this step does, but it works for some people. Here are the steps.
Turn off your mac, and reboot it while holding Command and S. The screen should go black, and you'll see some white text run across the screen, wait a few seconds, until you see the command prompt. Now type
fsck -fy
and hit the Enter key. This will run a series of system checks, which could take a few minutes. Be patient on this part. Once it's done, it will show one of two messages:
1. "The volume (your Mac) appears to be OK
or
2. "File System Was Modified"
If you got message 1, type reboot and press Return. Hopefully your computer works after this - if not, proceed to step 4.
If you got message 2, run the same command again until you get message 1. If it doesn't seem to be working, turn off your system and proceed to step 4.
If you couldn't even boot into Single User Mode in the first place (like me), go to step 4 anyways.
Step 4: Reset the NVRAM
The NVRAM is another kind of RAM that stores data like the computer volume you had set before you turned it off, or the screen brightness, resolution etc. This memory is saved, unlike with regular RAM. Resetting it isn't harmful to your system, it will just put your screen brightness, volume, etc. to defaults.
Turn off your Mac, and reboot while holding Command, Option, P, and R, and continue holding them down until you hear the computer restart again.
I can't really explain why to do this step, I just know it works for some people, and seems to be what unbricked my MacBook Pro. If none of these steps, fixed your Mac, well the situation is looking pretty grim. Try setting up a meeting with a Mac Genius at your local Apple store. However, I know that many other people with these symptoms ended up having a logic board failure. Apple can swap out your logic board for a new one, but the price is pretty hefty, somewhere around $300 I believe.
Well I wish you luck, I hope this helped you!

When switching on my Mac Pro on bootup it keep shutting down then eventually it works fine

When switching on my Mac Pro on bootup it keep shutting down then eventually it works fine

I also have the exact same problem with my early 2008 Mac Pro. Last spring, the video card that came with the unit burned out. I brought it in to the Apple Store in my area, but they were unable to really help me out. I ended up replacing the card, but about two or three weeks ago I started having the same exact issue that you do - the Mac would suddenly die occasionally, and then would take quite a few tries to come back up. It seems that resetting the PRAM helps temporarily with me. It has been up since about 3 PM so far, and it is behaving.
My main issue is that replacement parts are expensive for this machine. If I were to replace the power supply and the logic board, Apple would charge me about a thousand bucks! That's simply too much money to drop on a 4 year old computer.
My solution is that I will run it for a while longer, and replace it with the Mac Mini with the ATI GPU. The Mini is about 85% as powerful according to Geekbench, and if it dies I will not be out more than a few hundred bucks.
I will be migrating all my OpenCL code to FreeBSD as well, because replacing a power supply or motherboard in a generic DIY PC is only a hundred or two dollars at the most.

Hello ... I have a problem with a wifi connection speed on my mac pro ... the problem is that in one room the internet opening for the websites is extremely slow ... but when i move the mac pro somewhat to other location ... the internet speed increase

hello ....
my connection problem on my mac pro is :
that when i try to open a website on safari .... it delays ... and takes more than 30 seconds to open completely ...
but when i move the mac pro to another location ... its internet opening speeds up ....
also in one room ... web opening delays .... but on other rooms it is normal
so what can i do to solve this problem ....
Note : also when i hold it up and move in the same room ... the speed changes and somewhere speed up ... and in another location speed down ..
thanks for you all ...
Waiting for your support ... as quick as possible ...

WiFi signals get stronger the closer the machine is to the router and the less interference/blocking of the signal like via walls with metal in them or of thick concrete.
Since the signal emanates outwards in a sphere, your supposed to place the wireless router in a central location in the building so it covers all areas.
The power of the router also has a affect, if your router is old or something not that powerful like a Airport Express, it doesn't have the ability to filter out other signals or enough punch to get through walls etc. or cover a large area as effectively.
If you buy/have a powerful router of newer make and have issues where there is metal in the walls or thick concrete, then you can buy something like OpenMesh and by using Ethernet cables from the back of the router, extend the WiFi signal into other rooms and areas past the blockage.
https://www.open-mesh.com/

Even when I charge my Mac Pro to the full bar, the battery seems to be drained even when I am not using it. Example, after charging it full, i switched it on the next day and its 79% battery left. Is there something wrong? help please

Even when I charge my Mac Pro to the full bar, the battery seems to be drained even when I am not using it. Example, after charging it full, i switched it on the next day and its 79% battery left. Is there something wrong? help please

Assuming you are disconnecting from line power, when you say switched on, do you mean it was shutdown or in sleep mode? If sleep mode the battery will still drain because sleep still keeps some things active and the battery does drain a little. However, to go from 100% to 79% charge overnight is a bit excessive in sleep mode. Unless you have some processes set to activate over night by the cron file and do things like backup the system.
What are the statistics on the battery, the apple in the upper left corner, About This Mac, More Info, System Report, Hardware, Power...things like battery Condition, Capacity, remaining charge, voltage, current.

Why is it that when I plug my Macbook Pro to an external monitor, the external monitor turns black and shows the mouse only

Why is it that when I plug my Macbook Pro to an external monitor, the external monitor turns black and shows the mouse only

Hi, yes preferences sees there is a second display it recognises what make of monitor it is etc but I just get a blank blue screen on the monitor when I change it to the hdmi setting! I have tried with mirroring on and off, rearranging the displays in the preference window and lots of different resolution settings but with no difference.
An old MacBook connects fine so the monitor and hdmi port must be okay. I'm sure we have used the cable before but it could have been with the previous MacBook Air. The current one I'm using is a mid 2011 version running lion and is (according to software update) all up to date.
Any thoughts or help would be appreciated!

When i upgrade my Mac Pro to yosemite safari doesn't good work and doesn't save bookmark plz help me to fix it

when i upgrade my Mac Pro to yosemite safari doesn't good work and doesn't save bookmark plz help me to fix it

hi
when i save a page as boomark shown at the bookmark list when i close safari and restart safari evry bookmark that i saved dosn't show at the bookmark list
excuse me for whriting i speak a little english
1 save bookmark and show at the bookmarklist
2 i close safari
3 and reopen it
4any bookmark ,i saved them dosn't show at the bookmark list

I replaced the battery on my RAID card, when I booted my mac pro up, I get the folder with the question mark. I used a boot USB drive to boot and when I looked in the RAID utility, my RAID 5 volumes were no longer showing, advise.

I replaced the battery on my RAID card, when I booted my mac pro up, I get the folder with the question mark. I used a boot USB drive to boot and when I looked in the RAID utility, my RAID 5 volumes were no longer showing, advise.
Ernest

Not sure if I'm following you. I have 4 hard drives installed on my Mac Pro. I had a RAID 5 configured and functional for about 5 months. My battery died on the RAID card. I replaced the battery, seated the RAID card back in the slot I removed it from. When I booted to the USB drive to look in the RAID utility, I could see the battery is charged but my volumes are not showing.
The drives don't show in disk Utility. I built the RAID with the RAID Utility and they did show there. I have a early 2008 Mac Pro, Mavricks OS running Mac Server

I solve my problem of black screen when starting up my Mac pro, namely by the button lighting and then i saw the login screen. Hopefully it works for you too.

I solve my problem of black screen when starting up my Mac pro, namely by using the lighting button and then i saw the login screen. Hopefully it works for you.

It was the PRAM.

HT2508 My amp has an USB input but when I attach my mac pro to it, and set the input to the USB setting, no sound comes out. I looked at the system settings, but none of them produce a different outcome. How can I send the music through the USB out to USB

My amp has an USB input but when I attach my mac pro to it, and set the input to the USB setting, no sound comes out. I looked at the system settings, but none of them produce a different outcome. How can I send the music through the USB out to USB in?

AFAIK cameras offer their own built-in format utility for inserted SD cards. You should use that. Otherwise, refer to the manual that came with your camera to determine precisely how your SD cards need to be formatted to work properly. Personally, I'd suggest Partition Scheme: MBR, and Filesystem: FAT32.
Try to limit the number of formats you perform on the SD cards, though, as you're reducing their lifespan. I believe formatting causes re-writes to a portion of the SD card that has fewer read/write cycles than the rest of the card as a whole.

Power supply clicks twice when plugged in.

I'm new to Mac however I've been a certified PC tech for many years. I recently purchased my first Mac. It worked fine but needed to have the fans cleaned out. I removed the components and power supply just as I would have done for any PC (I was using heel straps and working on an ESD safe workbench). Upon cleaning the components I reassembled the tower (no left over pieces) and heard two clicks coming from the power supply when I plugged it in and when I unplugged it. After troubleshooting the components individually, and still hearing the two clicks I decided to remove the power supply and test it independently. When I plug in the power supply w/o being attached to the tower I still get the same two clicks (making a relay opening and closing sound) no fans or LEDs come on. Falling back on my years in the industry and common since I decided that the power supply needed to be replaced. After receiving the new (not refurbished) power supply and installing it I'm still getting the same two clicks. At this point due to frustration I break down and call the pros. I called four Mac repair facilities (three third parties and The Mac Store) with a question "is it normal for a G5 power supply that is not connected to the logic board to make a relay open and closing clicking sound" and didn't get much help. Since I'm new to Mac I'm unfamiliar with the characteristics of the hardware. I know that if I were to plug in a normal PC power supply w/o the logic board nothing would happen, but I was told by two of the Mac techs that a Mac power supply would still make the same relay noise w/o being attached to the logic board. The problem is that I have now dropped a fair amount of money in this G5 and I have nothing to show for my investment and I don't know where to go from here. If two of the Mac techs were right then I need to send the new power supply back for an exchange, or if the other two Mac techs were right I need to replace the logic board.
The specs are:
1.8GHz Duel Processors
160G Hard Drive
600W Power Supply
2G RAM
512 Video Card
Any help would greatly be appreciated.
Thank you,
Brian M

Dear Brian,
I'm sure that clicking relais sound is the normal behaviour of every G5 power supply.
Did you use the official service manual for the specified computer? If not, you can download it here (I don't know which of the two files is appropriate for your computer, but one of those certainly is).
The 512 MB video card is not the standard configuration: the maximum amount of VRAM for an Apple supplied ATI or NVidia was up to 256 MB.
Lots of success resolving the problem and regards,
Robbert

Powe supply clicking when i plug in mac pro

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