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MP 1,1-5,1 Mac Pro 2010/2012 Board level schematics?

Y

yakult121

macrumors member
Original poster
Dec 15, 2011
85
15
Y

yakult121

macrumors member
Original poster
Dec 15, 2011
85
15
Sigh…. Okay. I have dead logic boards, defo not PSU fault. Should I start with testing the smd caps for open circuits? What else should be tested?
All suggestions are welcome!
 
Last edited:
KeesMacPro

KeesMacPro

macrumors 65816
Nov 7, 2019
1,453
595
yakult121 said:
Sigh…. Okay. I have dead logic boards, defo not PSU fault. Should I start with testing the smd caps for open circuits? What else should be tested?
All suggestions are welcome!
Click to expand...
IMO testing the caps is a good idea : look for moisture around the caps on the pcb and/or even better measure them with a multimeter.

I would (since you have multiple boards) consider buying a MATT card to test the boards. It's a SPI flash (quick and dirty BootROM) you can plug in to the Logic Board (ignoring the SPI flash on the board).

@tsialex is the expert on this topic. If the boards work with a MATT card, you could ask him to restore the BootROM and flash it to a new SPI flash you could solder in.
 
Last edited:
Y

yakult121

macrumors member
Original poster
Dec 15, 2011
85
15
KeesMacPro said:
IMO testing the caps is a good idea : look for moisture around the caps on the pcb and/or even better measure them with a multimeter.

I would (since you have multiple boards) consider buying a MATT card to test the boards. It's a SPI flash (quick and dirty BootROM) you can plug in to the Logic Board (ignoring the SPI flash on the board).

@tsialex is the expert on this topic. If the boards work with a MATT card, you could ask him to restore the BootROM and flash it to a new SPI flash you could solder in.
Click to expand...
I’ve tried replacing the spi flash with @tsialex ’s advice but the spi replacement didn’t work.
 
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