Quicksilver 7448 cpu upgrade freezes at Apple logo, is it dead?

[kjay20]

Up until a couple days ago, I had a working Quicksilver 2002 w NewerTech 2.0 GHz 7448, Geforce 7800GS and Sonnet Tempo ATA boot card. I'd been playing around with a fan controller in the case since it is LOUD, when I started to close the door, saw a spark from the IDE power cable mess and the computer instantly shut off. The spark ended up being a loose female pin on the IDE 4 pin molex splitter (The cpu card has external power and 2 50mm fans). For the life of me I cannot get the machine to boot into 10.4 or 10.5 with the 7448 installed. It seems to freeze at the apple logo. It seems to boot fine into 9.2.2 although CPU Director reported it running at 133 MHz (I'll need to dbl check that if important). Machine was completely stable up to this point. Had been making great progress on Halo CE.
Things I've tried:
1. Boot Picker pulls up fine. OS9 boots fine. No OSX volume will boot. Have tried FW400 clone, Tiger Install disc. Every one freezes at logo.
2. Have uninstalled and reinstalled the ROM flash and NVRAM flash enabling '57,'47,'48 compatibility
3. Have gone into open firmware and reset all, cuda switch with everything unplugged, checked pram batt, installed new pram batt
4. Verified Tempo+drive, Geforce, ram, motherboard work with no issues in a spare Quicksilver
5. checked all the pins and reseated '48 card, no luck, nothing looks blown or burnt on card

The kicker, install the old apple 800 MHz processor and the machine boots fine into any version of OSX I have.

Question 1: Is there anything else to try before I label this card dead?

Question 2: If dead is it possibly repairable and by whom? I see there are some folks doing '57 and '48 swaps

Any assistance is greatly appreciated

 

[ervus]

So the computer will boot into open firmware on the 7448? If so, make sure the NVRAM script is installed that allows OS X to boot. Resetting the NVRAM will remove this script and result in what you describe.

 

[kjay20]

That is correct, it will boot into open firmware as well as boot picker. I’ve reinstalled/booted from the Powerlogix installer cd multiple times. Although, the installer only allows me to modify 3 boot rom files and OS9 nvram script. OSX nvram script is not an option that shows up. Only OS9. I’ve used this installer on my cube and it offers OSX nvram script. I’ll verify that today.

 

[Nermal]

Boot with Cmd-V to get detailed messages then take a photo and post it here.

 

[ervus]

It sounds like the CPU is fine, and you just need to put back the script for OS X. There are a few ways to do this. You could boot into open firmware and type it all in, you could use the kernel from Lightbulbfun to boot OS X and enter the script in a terminal, you could swap back to the 800MHz CPU--boot and enter the script in a terminal, you could use a later version of the newer tech firmware patcher to do this, or you could use the utility from Dosdude1 to do it. The 7448 upgrades came after powerlogix, so if you're using one of their patchers it may not have the 7448 script. Look for MAXPower_3.1b5FW.zip There is info in these threads as well:

forums.macrumors.com/threads/fastest-flash-and-using-a-pencil-to-overclock.1973903/

forums.macrumors.com/threads/g4-7448-and-7457-swap.2233532/

 

[DearthnVader]

It sounds like the CPU is fine, and you just need to put back the script for OS X.

I think this also....

 

[kjay20]

That was it! I’ve booted into Tiger and Leopard so far. I feel kinda dumb, my NewerTech disc was under a stack of stuff and it didn’t occur to me that was the one for the ‘48. Lesson learned, I shouldn’t tear down more than one computer at a time. Thank you and I appreciate everybody’s comments and advice.