MP 1,1-5,1 Mac Pro 5.1 2010 absolutely no response when press start

[WickedStorm]

Dear All.

New here because, unfortunately, I have issues with my Mac Pro 5.1 2010.

I was away for 6 months and the Mac Pro was stored in its original box until I came back. This morning I tried to start it up and when it tried to boot up I heard a short pop and it went off. Now when I press the start button, there is absolutely no response. Dead. I did not do any further test yet because I don't think there anything I can do.

Is it safe to assume that the power supply blew up and I should simply go ahead and buy a new one? Or could it be something else on the back plate, mother board that would require deeper investigations?

Just asking to have an idea where to start.

Thank you in advance for any suggestions.

 

[Macschrauber]

could be a lot, oxidation, rtc battery (remove it and try starting without it), the boards, or of course, most obvious the Power Supply.

 

[h9826790]

Many possible reasons, logic board, CPU tray, PCIe card, PSU...

But from your description, highly likely a capacity in the PSU blew up. If there is any reliable electronic repair shop around. You make take the PSU to there and let them check it.

If confirmed capacitor failed, then you can ask them to re-cap the PSU.

Of course, you can simply buy a PSU to perform swap test. It's your own choice. But if I were you, and I really want to safe the cMP. I will buy a whole used cMP (assume the price is reasonable) as my own "spare kit". So that, I will have all the parts (for future use), but not just a PSU.

 

[WickedStorm]

Thank you very much. I will look into it.

 

[eicca]

If you’re in the continental US I have two spare PSUs and could work a deal for you. PM me if needed.

 

[WickedStorm]

I am still assessing the problem. Just wanted to add that where I live, Thailand, the house is poorly grounded. Sometimes when an appliance runs it makes buzz the electronic in the house such as the TV, guitar amps and also the MacPro PSU was often buzzing. Like the MacPro aluminium housing and also MacBook Pro body can gives tickle when connected. The Mac Pro never got damaged until recently. I know it’s definitely not an ideal situation. Now that the MacPro is not starting at all, no response, no light, no sound at all, I did however heard the PSU buzzing as it usually did in the past. My question is, would the PSU buzz like this if it was damage? I am asking because I am about to receive a PSU replacement and I am a bit worry that it might not fix my problem.

 

[WickedStorm]

So I did receive and installed PSU replacement and it did the trick. The Mac started up. However, few times it did freeze, mouse curser disappeared, nothing to do but shut it down by pressing the start button. Maybe he SCM and PRAM need to be reset? Or the SSD booth drive starring to fail? I am tempting to wipe out clean and start fresh and stay away of internet as much as possible. By the way, I am on mojave. If any suggestions it will be greatly welcome. Thank you again for your time.

 

[tsialex]

Reset the SMC and NVRAM, check the RTC battery voltage (replace with a new BR2032 if the voltage is below 3.00V).

 

[WickedStorm]

I did reset the NVRAM couple days ago and since, it seems to be going well so far. I did order a BR2032 as back up if needed and I will try to have the broken PSU refurbished and keep it around.

Thank you.