----- Original Message -----
From: <[EMAIL PROTECTED]>
To: "G-List" <[email protected]>
Sent: Thursday, January 12, 2006 18:58
Subject: [G] Using 12V instead of 28V in Digital Audio, Gigabit
Ethernet etc.
Hello all. I finally got my Digital Audio motherboard, installed it
in my QuickSilver case, and installed the 2 drives I had from my
Sawtooth. I am using a modified ATX PS (the same one I used in my
Sawtooth). Now, I was told that instead of running 28V (or 24V or
25V) to the board, I could just use 12V and the machine would boot.
However, I did this, and the machine does not boot. It does
absolutely nothing when the power button is pressed. Everything is
hooked and wired up properly, so the only reason I can think why
this is not booting is that 12V is not acceptable and I actually do
need 24V. And my battery has the proper 3.6V so thats not the
problem.
I was told the consensus (I forget by whom) was 12V would work. I
would like to know how this consensus was decided and if anyone has
actually had success using 12V instead of 24V.
Thanks for any help
Chris P
I ran my DA using 5v on the 24v line for a short period of time to
test the theory. I don't recall where I got that info from, but it
did test out ok.
Couple things to do.
First, verify that you have disconnected +5vsb line, as the DA doesn't
use it. See
http://www.outofspec.com/frankenmac/wire.shtml to see what I'm
referring to.
Once you've done that, if it still refuses to light, plug everything
in, and use a paperclip to short the PWR On line to ground. This will
turn on the powersupply. Give it a min to settle, then hit the power
button on the mac.
Joshua Coombs
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