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Apple Power Mac G4 Cube External Power Supply Pinout Needed

There are 4 pins in a trapezoid arrangement. The two that are farthest apart go to case ground. The other two do not. What are they? Both +28V? One +28V, one -28V? One +14V and one -14V? (The unit is rated at 28VDC out). If you can help, please make sure to tell me, looking at the plug, which pin has what voltage. Thanks.

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5 Suggested Answers

SOURCE: Need a power supply to replace a Dynex DX-PS400W

Any power supply with the same pins will do. Just choose a good brand and with same rating or better higher(400 watts or more).

Posted on Sep 15, 2008

  • 1 Answer

SOURCE: FAULTY POWER SUPPLY FOR LITE ON PS -5251-2DS

when connected the AC power , no DC voltage reading from the p.s.

what to do?

how can i turn it on?

Posted on Nov 24, 2008

preachw996
  • 1179 Answers

SOURCE: PS works only when i short wire green & black on 20 pin ATX .

Sounds like it's not grounding properly. Safest thing to do would be to replace the power supply. Hope this helps.

Posted on Dec 27, 2008

  • 7 Answers

SOURCE: Dell NPS-210AB power supply starts up then shuts off

hello bob, try putting a phanton loa on the other bars of the power supply, it seems tha the power supply is not starting, some switchin power supply require an apropiate load to start.

Posted on Jun 29, 2009

  • 1 Answer

SOURCE: I have replaced the power supply on my Acer Aspire

When you have this problem on this PC, do not replace the power supply or the motherboard until you have first tried pulling out the video card. When the video card fails it can cause the x1700 to not power up. Pull the video card and see if it will power up without it.

Posted on May 19, 2010

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Astec AA23080


You have to "short" two of the sockets.
Get the CORRECT two, or else you could kill yourself, or "fry" the power-supply.
Details: http://pcsupport.about.com/od/insidethepc/a/atx-pinout-24-pin-12v-psu.htm about the "pin-out" arrangement.

It would be easier/safer to connect the sockets to a motherboard, and connect a power-switch to the ON/OFF pins on the motherboard, and then use that power-switch.

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I don't know that anyone has ever done a pinout of that custom vintage Apple Quadra/PM power supply. You may have to be the first! Let us know how it goes.

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Use caution, some older Dell machines used a non standard, proprietary pin-out on the 20 pin connector ALso the 6 pin is suspect. If you connect a regular ATX PSU, you will fry the MoBo. Look here
DELL ATX motherboard Power Supply pinout

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1 Answer

Pinouts power supply for hp d530 ultraslim


Hi lantzgema,
I looked up the specs of your d530 and all I could find out is that you have a 150 power supply, calling HP technical support was no help at all.
I did find some pinouts you can look at and determine which one exactly you have. Hope this help out.
http://pcsupport.about.com/od/insidethepc/a/atx-pinout-24-pin-12v-psu.htm
http://pcsupport.about.com/od/insidethepc/a/sata-pinout-15-pin-psu.htm
http://pcsupport.about.com/od/insidethepc/a/molex-pinout-4-pin-psu.htm
http://pcsupport.about.com/od/insidethepc/a/atx-pinout-4-pin-12v-psu.htm
If this is still not what you have there are other pinouts at the same website.

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1 Answer

Can not get computer to power back up no lights on front o rear just little light on mother board have dell 8400


Bad Power Supply, sscorbett.

Usually you have enough power to light LED lights, (Like the harddrive activity LED light for add-in cards, that you see on the motherboard), and spin fans, but Not enough power to turn the Processor on.

Dell Support >Dimension 8400 > Service Manual

http://support.dell.com/support/edocs/systems/dim8400/SM/index.htm

Technical Overview > System Board Components

http://support.dell.com/support/edocs/systems/dim8400/SM/techov.htm#wp1052739

harddrive activity light for add-in cards (SCSI LED)

The Dimension 8400 comes with an ATX style of Power Supply, that has a maximum rated Wattage of 250 Watts.
1) ALL of the LED lights combined use less than 1 Watt of power.
2) EACH fan uses 2 to 3 Watts
3) A typical Processor can use 51 to 125 Watts.

Your Power Supply just has enough power to light that LED light.
Weak voltage power rail.
Replace the Power Supply.

[ There are three power rails inside that SMPS.
Switched-Mode Power Supply.

1) The 3.3 Volt power rail
2) The 5 Volt power rail
3) The 12 Volt power rail ]

The ATX form factor for a Power Supply refers to the size, and shape of the case, for one.
Approximately 6 inches Wide, 5.5 inches Long, and 3-1/2 inches Tall.
The ATX power supply case in the Dimension 8400 however, is shorter in length.
It is 4 inches Long. (Depth)

Not an advertisement for the website, nor manufacturer.
Reference for the case size, and power cables needed,

http://www.cputopia.com/hp-400w-dell-dimension-8400.html

Scroll down to see the connectors of the various power cables needed.

You may have a Power Supply with these dimensions, and needed power cables, in an unused computer.
Perhaps someone has upgraded to a better computer, and has an unused computer that you can temporarily borrow the Power Supply for a test unit.

Make sure it has at least 250 Watts (Maximum rated wattage), plus,

1) 20-pin ATX main power cable. (Or a 20 + 4-pin ATX main power cable)

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain20

[ 20 + 4-pin ATX main power cable,

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain20plus4 ]

2) 4-pin ATX +12 Volt power cable

http://www.playtool.com/pages/psuconnectors/connectors.html#atx12v4

Plus the various power cables needed for the Harddrive, optical drive/s, and computer case fan/s, if it/they do not connect to the motherboard.

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