2007 mac pro power supply

I'm wondering if I am better off just getting a new power supply. My soldering iron is cheap and I'm mediocre solderer anyway. Are you pretty sure that is what it is? Kolvir wrote: I'm wondering if I am better off just getting a new power supply. Well, from fault we had with the one here and your description, there is a very good chance that it is. It's easy enough to remove the PS and have a look anyway. Quote: The is only one Apple store in my state and it is not close. I mentioned the apple store, because so often the response to this kind of question is to take it in to one and have them take a look at it.

I realize that there are other service providers, that isn't the kind of answer I needed, the one given by tobyglyn is the kind that is helpful. My MP remains off most of the time since it is just a backup. I went to turn it on this weekend and there is a small initial click followed shortly by a second and final slightly different sounding click and then nothing.

Pressing the button again generally does nothing. I'm Apple Certified so I tore it down to min. I can get the system to start up by unplugging it and plugging it in several times repeatedly and eventually pressing the power button will start the system. Simply reseting the SMC does not have the same effect. There is something about catching the power supply at a good moment just after it getting power from the AC line and pressing the power button that does the trick. My theory is that the initial surge of being plugged in with the power with the power button being pressed at the right time is getting the power supply over some hump.


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I'm going to try 'tobyglyn's' suggestion first because it makes sense. This system has hardly ever been used and is off most of the time.

Mac Pro A1289 - Power Supply Replacement (2009-2012)

Also, if 'Kolvir' ever got his system fixed and how he did it. Any of you please respond. Would really appreciate any thoughts. I have the official service manual and followed all of the steps outlined and got the correct LEDs too.

Apple Mac Pro Power Supply Early 2007 2008 614-0400 614-0409 661-4677 DPS-980BB - Good Condition

Same with the correct Memory LEDs, though I doubted that it was an memory issue from the start, but you never know. The Pro line is pretty good at catching bad memory by itself, however a bad RAM chip can cause the oddest problems. Reminds me of a bad ground or such on trailer lights, if anyone here has ever had the misfortune of trying to track that issue down. I also checked the battery, it was putting out the correct voltage. It would have been a little early for that to be bad, but you never know.

Quote: I can get the system to start up by unplugging it and plugging it in several times repeatedly and eventually pressing the power button will start the system. Simply resetting the SMC does not have the same effect.

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Something like that is my theory also. I was also thinking along the line that some obscure part in the PS might have needed to warmed up just at the right amount at the right time. I ended up replacing the power supply. I was getting by just letting it sleep, but then I started having an issue where the 'sleeping light' on the front would stop throbbing but the system wouldn't not come on or it might instantly freeze, so I had to take action. I'm disabled and on a fixed income and have little money, so I took the chance of it being the power supply instead of taking it to a costly tech.

Of course if it hadn't been the PS I would have been out more money overall, but unfortunately in my situation you have to take those kind of chances. My soldering iron is cheap and I'm mediocre solderer anyway. Are you pretty sure that is what it is? Kolvir wrote: I'm wondering if I am better off just getting a new power supply. Well, from fault we had with the one here and your description, there is a very good chance that it is.

It's easy enough to remove the PS and have a look anyway. Quote: The is only one Apple store in my state and it is not close.

Mac Pro - Power Supplies

I mentioned the apple store, because so often the response to this kind of question is to take it in to one and have them take a look at it. I realize that there are other service providers, that isn't the kind of answer I needed, the one given by tobyglyn is the kind that is helpful. My MP remains off most of the time since it is just a backup.

I went to turn it on this weekend and there is a small initial click followed shortly by a second and final slightly different sounding click and then nothing. Pressing the button again generally does nothing. I'm Apple Certified so I tore it down to min. I can get the system to start up by unplugging it and plugging it in several times repeatedly and eventually pressing the power button will start the system.

Simply reseting the SMC does not have the same effect. There is something about catching the power supply at a good moment just after it getting power from the AC line and pressing the power button that does the trick.

Mac Pro Computer Power Supplies for sale | eBay

My theory is that the initial surge of being plugged in with the power with the power button being pressed at the right time is getting the power supply over some hump. I'm going to try 'tobyglyn's' suggestion first because it makes sense. This system has hardly ever been used and is off most of the time. Also, if 'Kolvir' ever got his system fixed and how he did it.

Any of you please respond. Would really appreciate any thoughts.


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  • Apple Mac Pro Power Supply Early 2007 2008 614-0400 614-0409 661-4677 DPS-980BB - Good Condition!

I have the official service manual and followed all of the steps outlined and got the correct LEDs too. Same with the correct Memory LEDs, though I doubted that it was an memory issue from the start, but you never know.

Description

The Pro line is pretty good at catching bad memory by itself, however a bad RAM chip can cause the oddest problems. Reminds me of a bad ground or such on trailer lights, if anyone here has ever had the misfortune of trying to track that issue down. I also checked the battery, it was putting out the correct voltage. It would have been a little early for that to be bad, but you never know.

Quote: I can get the system to start up by unplugging it and plugging it in several times repeatedly and eventually pressing the power button will start the system. Simply resetting the SMC does not have the same effect. Something like that is my theory also. I was also thinking along the line that some obscure part in the PS might have needed to warmed up just at the right amount at the right time.

I ended up replacing the power supply. I was getting by just letting it sleep, but then I started having an issue where the 'sleeping light' on the front would stop throbbing but the system wouldn't not come on or it might instantly freeze, so I had to take action. I'm disabled and on a fixed income and have little money, so I took the chance of it being the power supply instead of taking it to a costly tech. Of course if it hadn't been the PS I would have been out more money overall, but unfortunately in my situation you have to take those kind of chances.

If it had been the logic board, I wouldn't have been able to get it replaced anyway.