Step 2 : Do a visual inspection of the card for any damaged components or leads... Perhaps verify the oscillator is working (although I do not believe the oscillator would prevent card detection).
Step 3 : Buy a new card. I don't know what else to tell you. It is possible to troubleshoot anything, but without a schematic (or more) it is not going to be easy, or worth the time.
FYI : The resistors (3) mean nothing regarding the card being detected by the OS. They are simply termination resistors. There is a Surface mount fuse on the board (and a power supply), but I believe both are part of the termination circuitry.
Derek
On Wednesday, October 15, 2003, at 04:53 AM, Greg Shafritz wrote:
Hi All!
Here's a good one for those of you with a DIY technical background:
What are the most common issues that could make a NuBus card "DOA"? I
recently received an FWB SCSI Jackhammer that does not show up in Apple
System Profiler, and Tattle Tech also cannot detect the presence of the card
when installed.
Essentialy, this therefore is a "dead" card.
What are the first things I should look for in trying to repair this card?
I assume that I should first check to be sure that it is receiving power
from the motherboard - true?
Do these cards sometimes have onboard power supplies that fail?
What about blown microfuses (what would a fuse look like that wasn't a
conventional fuse) - is there such a thing as an SMD fuse?
I'm ready to dive in really deep, and I've got all my test equipment out...
who's able to help point me in the right direction as to how to proceed?
TIA (very much!)
Best wishes, Greg Shafritz
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