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Post by reddrag0n on Sept 8, 2006 13:31:58 GMT
I have scoured the web for an answer but i have only gotten maybe half of the answer i was looking for. This is for everyone... Can a standard ATX power supply be used in a G4 Quicksilver? I have created a chart of the pinouts and codes for the ATX 20 pin, ATX 24 pin and QS 22 pin. Now something to think about. ADC is not an issue here since a Strangedogs video card will be used. So ADC is out of the question!! If i wanted an ADC monitor, i will hook it up with a DVI to ADC adapter!!! There, that part is made clear!!! I have heard but not seen for myself someone saying that firewire will work with +12V. So, my question is, will this work? Changing pins 9 & 22 to +12V and still have the computer boot and still have firewire.   |
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Post by aquamac on Sept 8, 2006 17:52:29 GMT
It can be made to work. I must stress I have not done this mod myself. The Quicksilver needs a min of 12volts to start the boot sequence. Without this there will be no boot. Apple use the 28v line, but I am told by people that they will boot with 12v. As you say forget ADC.
Provided your other connections are modified correctly you can do no harm by undervolting pin 22!
Does this mean that the day of your Quicksilver reckoning has drawn one step closer???
Maybe I'm being dense today, but why change pin 9?
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Post by reddrag0n on Sept 8, 2006 19:55:34 GMT
Maybe I'm being dense today, but why change pin 9? This is why... Pinout of the Quicksilver PS:( NOTE - see update/reader notes below. On a Quicksilver G4/733 (first model) Pin 9 is Purple, not White as shown below. Not sure if that's different for a 2002 QS model.) *pic courtesy of xlr8yourmac.com*  |
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Post by B B on Sept 9, 2006 17:27:25 GMT
Can this help you ? Pour la tension sur la prise d'alim et les contacts, voir sur cubeowner, ici : forum.macbidouille.com/index.php?s=&showtopic=163189&view=findpost&p=1688432If you go this link, you will find on top of the thread, there is a Zip file you can access, I hadn't yet opened it when I sent you this message, the guy explain with pictures how he did it. I have to go to sleepnow; I am working at night shift. I will send you the translation later today or tomorrow. Cheers, |
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Post by reddrag0n on Sept 10, 2006 6:30:19 GMT
It might if i could understand french. I failed that class big time in school. |
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Post by aquamac on Sept 10, 2006 7:45:09 GMT
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Post by reddrag0n on Sept 10, 2006 7:49:44 GMT
Tried that already Steve, it's informative, but not to the extent that i am looking for.
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Post by aquamac on Sept 10, 2006 8:45:56 GMT
Dug up this thread at strangedogs I remembered, read through: strangedogs.proboards40.com/index.cgi?action=display&board=experiments&thread=1124235177&page=1Maybe this post contains the answer from Arti: You are confusing the matter. It's not heresay but depending on a model the sb voltage ranges from 24 to 28V. **None of the Macs themselves require it, 12V works just fine. Maybe lower, but then your Firewire ports would be out of spec. ** What requires 24V - 28V is an ADC monitor connected to your Mac. I don't know the specs of that "voltage boost" circuit, but it being capacitor based voltage doubler, it most likely is incapable of providing enough current to support bus powered Firewire devices let alone monitors. So it's pretty much waste of time to build it as it doesn't buy you anything more than a real 12V supply. What you should do, if you want to use an ATX supply, is to get that Skyhawk supply while you still can, Exactly, that's a very good find and it's perfect. If you want ADC you need something real anyway, like extra 3 to 4A 24V supply. |
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Post by B B on Sept 10, 2006 9:27:36 GMT
Can this help you ? This is the first part of the translation, I will do the same for the file later. Cheers,Pour la tension sur la prise d'alim et les contacts, voir sur cubeowner, ici : For the voltage on the power connector and the connections, check here on the site cubeowner Voici le détail sur mon changement d'alim sur un QuickSilver 2002 : Fichier rtf zippé 810 Ko Here are the details about the changement with a Quicksilver 2002 Je n'ai pas branché le 12V pour les ports FW, n'ayant pas de périphériques correspondants. Cela se fait en montant un inverseur qui envoie le 5V permanent (5vSB) sur la broche 28V pour le démarrage puis le 12V sur cette même broche pour alimenter les prises FW. Il faut penser à ramener l'inverseur sur le 5vSB avant le démarrage du Mac. I have not connected the 12V for the FW ports, because I do not have any FW peripherals. It can be done by building an inverter which send 5V permanently (5vSB) on the 28V connector for startup and the 12V on the same connector to give the power to the FW connectors. You have to thing to put the inverter back to the 5vSB before starting upthe Mac Digital Audio et Quicksilver ont des cablages quasi identiques (à part la broche NC sur Digital Audio) DA and Quicksilver have nearly the same cabling (except the NC connector on the DA)forum.macbidouille.com/index.php?s=&showtopic=163189&view=findpost&p=1688432[/quote |
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carrocka
New Member
PowerPC rocks!!
Posts: 41
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Post by carrocka on Sept 13, 2007 19:48:40 GMT
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Post by reddrag0n on Sept 3, 2009 19:48:31 GMT
The answer to this thread is yes!!!!! By means of one of these.... ATX to Quicksilver adapter. Right now i am running a 450W PS in my QS 2002. More cooling, hard drives and DVD drives and no issues with slowing down. No power issues either. I haven't tried the firewire yet, but so far i have nothing that needs it. I will have pics up soon on a different thread regarding The Phoenix. |
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