MP 1,1-5,1 Mac Pro 4.1 black screen

[icriis]

Good morning all,

I have a problem ...
I have a Mac Pro 4.1 which I picked up a few weeks ago now
It was originally equipped with two 2.4ghz processors
16gb of ram
ATI 4870 graphics card

I upgraded to

2x 5690 so 3.46ghz
32gb of ram in 1333
Rx580
Nvme 970 in pci
All under big on ?????

A week ago I noticed that the temperature of the northbridge was rising to 75 degrees ...
So I order the pins to give him thermal paste and be quiet.

Yesterday evening I dismantled the machine, I removed the processors, I cleaned the northbridge but I put a little thermal paste on the condos around the diode ... I clean with cotton swabs and a little solvent. Everything is nickel I go back. I restart it works, the temperature has dropped to 55. I go for a walk my dog and on my return, the mac has gone to sleep but I cannot dislodge it my mouse is on but the screen remains black ...

I restart and the black screen and the mouse and keyboard don't light up anymore ...

OK…
I put the old graphics card back to see if the bootscreen is there. No nothing at all.

I see two red LEDs blinking once for a millisecond on the left and right sides of each processor.

I have checked the system lights and have the following:
CPU A (disabled)
CPU B (disabled)
PWROK (green)
5V STBY (orange)
3.3 V (off)
1.5 V (off)
1.05 V (off)

The other LEDs below show:
SYS.PG (green)
PLT.RS (disabled)
RI.PG
EFI DONE
GPU OK (green)
5V (off)
RSN RST (disabled)

I have tried reset pram, nvram and smc.

But as said above my keyboard and my mouse do not seem to work.

There I unplugged everything and removed the battery.

I need your h please.

 

[tsialex]

EFI_DONE off is a brick.

How about reading two similar threads?

4,1 cMP not booting after firmware/part upgrade

Hi everyone, I hope this finds you well. I’m having some issues with my 4,1 early 2009 cMP. The issues came after I seemingly successfully flashed it to a 5,1 with the previously working configuration and shut it down to install new ram and CPUs. Previously working configuration: El Capitan...

forums.macrumors.com

Mac pro no boot

Mac pro turns on but only fans spin i press diagnoses switch i get 5v standby light and psu pwr ok light no chime,no video apparently this happened when installing OS X anybody have any ideas?

forums.macrumors.com

 

[icriis]

EFI_DONE off is a brick.

How about reading two similar threads?

4,1 cMP not booting after firmware/part upgrade

Hi everyone, I hope this finds you well. I’m having some issues with my 4,1 early 2009 cMP. The issues came after I seemingly successfully flashed it to a 5,1 with the previously working configuration and shut it down to install new ram and CPUs. Previously working configuration: El Capitan...

forums.macrumors.com

Mac pro no boot

Mac pro turns on but only fans spin i press diagnoses switch i get 5v standby light and psu pwr ok light no chime,no video apparently this happened when installing OS X anybody have any ideas?

forums.macrumors.com

I have no led on the 4.1 at efi just one location

 

[tsialex]

I have no led on the 4.1 at efi just one location

Are you sure? Check again, all Mac Pros have the EFI_DONE led. If your backplane don't have it, it was removed by someone.

Please upload a picture of the DIAG LEDs area.

 

[icriis]

it’s my bad he have one

 

[tsialex]

So, if the PSU/CPU tray are working and EFI_DONE is off when you press the DIAG button, you have a brick.

See my posts on the two threads that I've linked on post #2, no need to write all over again here.

 

[icriis]

Ok thanks a lot

 

[icriis]

I restarted and all lights are green but still no screen and processors are working because they’re hot. The logicboard must be ok. Do you have another idea ?

 

[Macschrauber]

Do the leds come instantly or is there some moving? Gpu ok should lit after the firmware is loading the efi driver from gpu rom.

 

[icriis]

Do the leds come instantly or is there some moving? Gpu ok should lit after the firmware is loading the efi driver from gpu rom.

I come with 5ms per light

 

[Macschrauber]

You mean each LED after 5 seconds?

if efi done and gpu ok both are lit in the same second after powering on the machine backplane is a faulty.

they need to show some life during the startup process.

 

[icriis]

No no 5 millisecond, the 3 leds in less than a second

 

[icriis]

I replace the processors by the old ones and it’s still the same

 

[Macschrauber]

I have 3 dead backplanes what do this. Power on, efi done and gpu ok lit directly when powering without delay.

replacing rom chip didnt helped, btw.

 

[icriis]

I have 3 dead backplanes what do this. Power on, efi done and gpu ok lit directly when powering without delay.

replacing rom chip didnt helped, btw.

Nice…
So I need backpanel?

 

[tsialex]

Having EFI_DONE lit is a sign that the EFI part of the BootROM was read and is valid, but the problem could be elsewhere inside the BootROM, like a corrupt NVRAM volume for example.

EFI_DONE off is a sure sign of a defective backplane/corrupted BootROM, but EFI_DONE lit is not a confirmation of a perfect BootROM.

Before throwing away a backplane, always replace the SPI flash memory, with a modern equivalent like MXIC MX25L3206E programmed with MP51.fd.

 

[icriis]

I have just realized my computer have a speaker but it never made sound in 1 month of work

 

[tsialex]

Nice…
So I need backpanel?

Could be your CPU tray/PSU. You have to test each component with a working Mac Pro to really know what is defective.

 

[tsialex]

I have just realized my computer have a speaker but it never made sound in 1 month of work

Could be a a sign that your Mac Pro had MP51.0087.B00, the BootROM that bricked so much Mac Pros back in the day. All Mac Pros that had it installed in the past lost the POST chime, updating to a new version don't bring the chime back.


After being sure that the PSU and CPU tray are working, I'd replace the SPI before buying a replacement backplane.

 

[icriis]

Thank you
How check the CPU tray? And where can I find a SPI already programmed?

 

[tsialex]

Thank you
How check the CPU tray?

Install your CPU tray and PSU on a working Mac Pro, install the working PSU/CPU tray on yours.

Btw, why you didn't read the threads I linked? You are asking questions answered before.

And where can I find a SPI already programmed?

Buy the ch341a programmer (~$8 on eBay/AliExpress), the SPI flash memory (less than $2 on Digikey) and program yourself.

 

[icriis]

I absolutely need a mac pro 4.1 or a 5.1 can do it

 

[icriis]

And for test pcu?

 

[tsialex]

I absolutely need a mac pro 4.1 or a 5.1 can do it

For diagnostic purposes, don't matter.

The SMC mismatch between a early-2009 backplane/CPU trays and a mid-2010/mid-2012 backplane/CPU tray just makes the fans work full RPM/full time and won't change the test.

And for test pcu?

Again, install your suspected components in a working Mac Pro, one component a time. Start with the CPU tray, after that test the PSU.

 

[icriis]

Thank you so much for explain

My mouse and keyboard don't seem to be powering. Can it be a lead?