Question about RaidMax Aurora RX580 (RX580F) 580-Watt Power Supply

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Low 12v rail!

Hey, when I check my 12v rail it says I'm running 11.0 and sometimes in the 10s! Is there anyway I can get this up? This is when it's sitting here doing nothing and when it's doing games or looking for something on HD. Is there anyway to give this thing some more juice so my GFX card and HDs will work right?

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Re: Low 12v rail!

Replace that PSU as soon as possible. When supply voltage is too low, then current is increased to compensate, resulting in more heat. This can damage your video card and motherboard.
I know it is possible to replace bad components or to upgrade a low quality power supply with better components, but it takes soldering skills, and safety is an issue as well. Unless you plan to do it yourself and you have a lot of free time, then it will be more cost effective to replace the power supply with a better model, as the cost of a professional repair is much more than it costs to just buy a new one. From reading on the forums, Raidmax is not a good brand and they usually use low quality and underpowered components for the rating they claim.
I personally have one with a burnt out component that I plan to fix as soon as I find a schematic or learn the specs of the old component. I have a lot of free time and little money.
Don't throw out your defective power supply. There are still a lot of good components that could be salvaged for electronics projects. It may be worth a few bucks to an electronics enthusiast, but it's worth it to give it away for free or the cost of postage just to keep it out of the landfill.

Posted on May 08, 2015

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Re: Low 12v rail!

Sounds a sthough you have a regulator problkem or bad filter capcitors.. these supplys are so inexpensive , is it worth repairing??I have never ever repaired a puter supply/.

Posted on Sep 11, 2006

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I need to help me with wire code and their voltages. The I kept my computer for sometime so rats accessed into power supply and cut all the wires and yet here in uganda parts are not available...

hi... hope this can's the most common for any power supply...RED is for +5V DC, BLACK is for Ground, yellow is for +12V DC...GREEN is for earth cases for a 12V output adaptor redi is the 12V and black for ground..pls. don't forget to rate and vote ...thanks......

Feb 16, 2011 | Compaq (176763001) 120-Watt Power Supply

1 Answer

I want to convert this power supply for use with a battery charger for model aircraft. I need to know the color codes for the wires and also the pinout and which wire is the power on.

Pin Name Color Description
1 3.3V Orange +3.3 VDC
2 3.3V Orange +3.3 VDC
3 COM Black Ground
4 5V Red +5 VDC
5 COM Black Ground
6 5V Red +5 VDC
7 COM Black Ground
8 PWR_OK Gray Power Ok (is a status signal generated by the power supply to notify the computer that the DC operating voltages are within the ranges required for proper computer operation)
9 5VSB Purple +5 VDC Standby Voltage (max 10mA)
10 12V Yellow +12 VDC
11 3.3V Orange +3.3 VDC
12 -12V Blue -12 VDC
13 COM Black Ground
14 /PS_ON Green Power Supply On (active low). Short this pin to GND to switch power supply ON, disconnect from GND to switch OFF.
15 COM Black Ground
16 COM Black Ground
17 COM Black Ground
18 -5V White -5 VDC
19 5V Red +5 VDC
20 5V Red +5 VDC

/PSON activated by pressing and releasing the power button while the power supply is in standby mode. Activating /PSON connects the power supply's /PSON input to ground, thereby switching the power supply to full-on condition.
18 AWG is recommended for all wires except pin 11, which should be 22 AWG. For 300W configurations 16 AWG is recommended.
There are several ATX variants.
Hope this helps.
If this helps you resolve your problem, please
consider giving me a rating of 4.It will help me as well. Thank you.

Nov 26, 2010 | Compaq (243890-001) 250-Watt Power Supply

1 Answer

Green flashing light

Remove the PSU. If you have another one of equal (preferably larger) power output, then replace it and connect it like you normally would (sata connectors, aux 12v 4-pin, molex hdd connectors, etc...) and see if it works.

Its most likely that one of the 12v or 5v rails has burned out or that the entire unit itself is burned out. Either way, its done in. You'll need a new one.

May 22, 2010 | Bestec (ATX100-5) (ATX1005B) Power Supply

3 Answers

12v reads 7v --5v reads 3v. This to me is not normal. The test was done with MB hooked up cause that was the only way turn on the supply. Is it the supply or MB that is the problem ?

It's the power supply.


Because it's made with cheap components for one.
The gauge of the wiring inside is too small.
The Electrolytic Capacitors are cheap. Have a bad formula for the Electrolytic paste inside.
The Rectifier Bridge is inferior.
I could go on, and on.

What has transpired is that one or more Electrolytic Capacitors inside have failed, or are failing.
This makes a weak voltage rail.

Electrolytic Capacitors inside a personal computer power supply are Filters. They are used to filter the incoming AC voltage in the Input stage, and the rectified, (DC) voltage in the Output stage.

An Electrolytic Capacitor resembles a small aluminum can. It has two leads coming out of the bottom. (The ones used for personal computers, that is)

Inside the Electrolytic Capacitor are three layers.

One layer of a strip of thin metal.
This is the Conducting strip, or Positive strip. Connects to the Positive lead. (Only the Negative lead is marked)

One layer of thin metal with a non-conductive coating applied to it.
This is the Non-conducting strip, or Negative strip. Connects to the Negative lead.

There is a strip of paper which is soaked in Electrolytic paste.
The strip of paper is laid in-between the conducting strip, and the non-conducting strip, then the all three layers are rolled up, and inserted into the 'Can'.

When an Electrolytic Capacitor goes bad, the paste forms a gas. Hydrogen Gas. This gas in turn creates pressure, and compromises the seals of the Can.

There is a rubber round seal on the bottom. There is a seal on top. The top of the 'Can' has a notch etched in it. Common shapes are an X or lK.

When too much pressure develops inside, the seal is pushed out of the bottom, (Slightly), and/or the notch on top of the Can splits open. In time Electrolytic paste oozes out.

So much paste loss, and the capacitor operates at a lower capacitance. Too much paste loss, and the capacitor fails.
(Also after time Electrolytic paste breaks down. Chemical reaction breaks the paste down. Designers are aware of this, and incorporate capacitors that are 50 percent better than is needed)

This is NOT an invite to open your power supply!
Capacitors are designed to slowly build up a charge, then release it all at once!
They can hold a charge for weeks, sometimes months! (Sometimes longer than this)

Should you reach inside, and touch your fingertips to the two terminals of a capacitor, it can release it's charge to you!

Should you reach inside, and your fingertips complete a circuit, that one or more capacitors are in, it/they can release their charge to you!

The best way is to use a power supply that is KNOWN to be good, and connect it for a test.

Computer power supply's put out three voltages. Two you have observed.
A.3.3 Volts (Orange insulation on the wire)
B.5 Volts (Red insulation)
C.12 Volts (Yellow insulation)
(Newer computers are doing away with the 3.3 Voltage Rail. Your power supply still has the 3.3 voltage rail)

As long as you have the correct power supply cables, and connectors, plus the right amount needed, you could use ANY power supply that puts out 160 Watts.

PROBLEM IS, the size, and shape of your power supply. You need one that is that size, and shape.
It SHOULD fit inside. Sitting outside the computer is a bad safety factor.

Therefore, it is my suggestion that you buy the correct power supply to fit your computer.

Bad motherboard? Don't think so.
Because of the voltage readings you have.

Do you see any bad Electrolytic Capacitors on the motherboard? Any that show visual signs of failure? This is the first hardware indication of a bad motherboard.
This gives more information on the visual signs of capacitor failure,

Also keep the inside of your computer clean, and the power supply. Computer unplugged from power, use a can of compressed air for computers.
When the inside of a computer, and it's power supply are dirty, the power supply has to deliver more power.

Heat = Wasted Energy.
The processor fan, and heatsink are dirty? Then the processor heats up, and requires more power. (Eventually the thermal limit of the processor is reached, and BIOS turns the processor off. It's a Fail Safe feature built-in. Keeps the processor from burning up)

The inside of the power supply is dirty, and it's fan?
Inside the power supply are heatsinks. They resemble the heatsink used for the processor.
A Heatsink draws heat away from the object it is attached to. Then air is drawn over the heatsink fins,( that are radiating heat), and heat is pushed away by the air.

The fan for the power supply draws air. Draws air into the power supply though the computer case. Once the fan blades, it's center hub, and the outside cage around the fan, become coated with dust/dirt, the cooling capacity drops tremendously.

The power supply has to keep up with the energy that is being wasted, and puts out more power.
Eventually components inside the power supply fail. (Electrolytic Capacitors are Generally the first to go)
Again, heat = wasted energy

Nov 22, 2009 | IBM (24P6829) for NetVista M41 160-Watt...

1 Answer

To low output voltage 4.12 V pdp-121p

you power supply may be faulty or, or you motherboard, even try to update the bois

Oct 08, 2009 | Compaq 220W Power Supply for PDP-121P...

2 Answers

Should i upgrade power supply and how much ?

watts is very small impulses of current, volts is a stead powerful current. If you are going to upgrade your power supply you just want to upgrade the watts to the next biggest which is 500watts.

Here is a link to a wattage caluculator to tell you how much you should have:

Jul 10, 2009 | System Power Supplies

1 Answer

Upgrade for Bestec ATX-1956D (HP p/n: 0950-4106)

How about the LC Power LC350M Micro ATX - 380 Watt

or the 

Logisys 350W Micro ATX

They should fit your form factor and output as much as 350W being relatively cheap, but neither gets 18 amps on 12V rail...
I think no power supply of that size has an output like that...think about a cheap but substancial chassis upgrade if you need that power...Have a look at directron for the PSUs.

Feb 13, 2009 | HP Bestec ATX-1956D 200w HP Part No...

1 Answer

Power supply

ATX Version 1.2 - 20 wire motherboard connector Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 Pin 9 Pin 10 3.3V 3.3V Gnd 5V Gnd 5V Gnd P_OK 5VSB 12V Oran Oran Blk Red Blk Red Blk Gray Purp Yell Oran Blue Blk Green Blk Blk Blk White Red Red 3.3V -12V Gnd P_ON Gnd Gnd Gnd -5V 5V 5V Pin 11 Pin 12 Pin 13 Pin 14 Pin 15 Pin 16 Pin 17 Pin 18 Pin 19 Pin 20 The color scheme used for the voltages in the 20 pin connector holds for the other ATX standard power supply connectors. However, brand name manufacturers often build proprietary power supplies or make up their own color coding, so I wouldn't throw out a power supply that supplies 5V where you think it should supply 3.3V. It's more likely a proprietary design than a failure.

Feb 21, 2008 | System Power Supplies

1 Answer

Start up problem

yes they sell power tester on ebay for 5 bucks eay to use see if all rails are ok sum could be bad not getting enf power always have it on nice power strip surge protecter i would buy new power least one with dual rails im a drummer too

Jan 10, 2008 | System Power Supplies

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