Pro 1,1 won't boot. Need help troubleshooting.

[LetNightExplode]

Mac Pro 1,1
OS X 10.6

I tried to turn on the computer again - white power light came on but it didn't boot from the drive.
It does not appear to be accessing the hard drives at all. I have removed all external USB sources and I still get nothing. i have tried removing all but the first(system) bay and it stll won't boot.

No chime, no screen, no dark grey screen. I hear what sounds/feels like the two fans going full power but nothing that sounds like HDD access. This continues until I cut the power again.

I removed the graphics card - all the drives and but one set of DIMM's with no difference. Fans still stay on full power until I cut power. It does show the white power light on the front though.

I have reseated all the memory as well - cleaning off as much as I could witha 12oz can of compressed air. Still no difference

I guess there is no way to run the Hardware Test in this stage.

The logic boards Diagnostic LED's show "trickle power" That led me, and other apple "experts" to suggest a power supply problem. I bought a new one off ebay but after connecting it nothing changed

Any ideas?

 

[ashman70]

Sounds like it could be the logic board, I would take it to an Apple store or authorized repair center, not much else you can do at this point.

 

[Macman45]

Since you have replaced the PSU, then the LB must be the next in line. I would let Apple take a look at it before you buy another one though. Just ask then for a diagnostic check, if the board proves to be at fault, which it pretty much sounds nailed on, then you can source one from a cheaper outlet.

 

[tomorrowtools]

Mac Pro 1,1
OS X 10.6
"I guess there is no way to run the Hardware Test in this stage."


DID you run hardware test? Nowhere do you say you tried booting from system disk. It's worth it to find a system disk and see if it runs. When you follow instructions re Hardware Test, it will take a LOT of time...just wait.

Tomorrowtools
Mac Pro 1.1, OS10.6.8 w/ SSD 'fusion'

 

[LetNightExplode]

Since you have replaced the PSU, then the LB must be the next in line. I would let Apple take a look at it before you buy another one though. Just ask then for a diagnostic check, if the board proves to be at fault, which it pretty much sounds nailed on, then you can source one from a cheaper outlet.

Is the diagnostic check something I could perform at home? Apple is way way too expensive and I don't want to spend any more money on a computer that is 6 years old :/

Mac Pro 1,1
OS X 10.6
"I guess there is no way to run the Hardware Test in this stage."


DID you run hardware test? Nowhere do you say you tried booting from system disk. It's worth it to find a system disk and see if it runs. When you follow instructions re Hardware Test, it will take a LOT of time...just wait.

Tomorrowtools
Mac Pro 1.1, OS10.6.8 w/ SSD 'fusion'

Where I said "i have tried removing all but the first(system) bay" I meant I removed HDD Bay 2, 3, and 4 but left in my Bay 1/System/Boot/Startup/Root.