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No power, logysis 20/24, all wires connections triple checked. What now?

I am not sure if it is the power supply itself as it is brand new, and i do not believe that it is an issue with the button. I have checked and double checked my pins and connectors. motherboard is an asrock, and its clean. Have not attempted to "jump start". Will soon. turned on a couple of times, then nothing. ftp://asrock.cn/manual/A780GMH128M.pdf that is the motherboard and manual so i am pretty certain that i am doing it correctly so far. previous power supply had same problem. 0 power on start up.

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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map9966
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SOURCE: connector pulled off power buton wires

Hi ford, the most common case colored wires used for negative - is white. The colors blue, red, green are usually positive +. The internal speaker though it uses a 4 pin connector only plugs onto the 2 end pins. Black is connected to negative - pin & red is connected to + positive pin. (Depending on the MB model).
All these case LED's use 5volts DC. If you make a boo-boo, don't freak out. You can usually shut down the system & turn the connector 180 & re-connect it with out hurting the board. Suggest you connect 1 at a time & check in-between each.

Still having trouble, include the name & model number of the MB.
Good luck!
Mike

Posted on Sep 29, 2008

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judesoul
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SOURCE: emachine t6532 motherboard issue???

Is your new SUP has the same specs with the old SUP? like voltage output, WATTS etc....

Usually motherboards have a led light in it that will light up when its connected on SUP.

regarding the wire placements for power and led connectors, you can view it in your users manual.

Posted on Feb 05, 2009

Jay_Sav
  • 93 Answers

SOURCE: System will not start up. Cpu fan spins once, then nothing.

It is more than likely that when your old power supply died a death, it damaged some components on the motherboard. Replace the Motherboard and chip, and you should be back in business. You can pick up some good value bundles to save money on buying the parts seperately. The power supply working again after turning off and on, is because there is a little trip in the power supply that triggers when it detects a fault. Powering down resets that trip allowing it to try and work again.

Posted on Mar 05, 2009

  • 414 Answers

SOURCE: Power Supply Replacement

It never hurts to have a larger power supply, yes it have use 100watts more in a hour. But you should have better reliability with the 450W.
Mark

Posted on Apr 05, 2009

  • 35 Answers

SOURCE: WINFAST 760GXK8MC motherboard problem

It's possible that while booting your motherboard without the 12V power connected you physically damaged some components which eventually lead to the chip burning up.  However, it is quite possible that this motherboard was defective as Foxconn has discontinued it.  I would recommend RMA'ing (return merchandise authorization) the motherboard back to Foxconn.  While no one wants to wait for shipping it is probably your best bet.  Even if you order the chip that has been damaged, and can properly solder it back in place, there will most likely be other physical damage that is not visible to the eye.  I would recommend another motherboard, and Foxconn has quality mobo's for around $50.  Try visiting www.newegg.com. Hope this helps :)

Posted on Apr 22, 2009

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My x553m asus laptop won't switch on. What do I need to do. Please help


for first ,check power supply
This is one of the most common problems. There are various things that can go wrong, from using the wrong laptop power supply to a faulty power brick or even a blown fuse.
First, make sure the battery has some charge. If you're not sure, and there's no power indicator on the battery itself, then remove it entirely and just use the mains charger.
Check over the wire itself, as power supplies get beaten up, especially if you carry them everywhere. Weak points are at the ends where it joins the black brick and at the plug which connects to the laptop. If you can see the coloured wires inside the black outer protection, it could be time to buy a new PSU.

Apr 10, 2015 | ASUS Computers & Internet

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I have a brand new power supply for the unit but system won't turn on


might sound silly,but have you turnd on the power switch for the pc if it has one,and the one on your power supply,
if you have check the fuse in the power supply,or check the fuse in your main power lead.

Mar 29, 2015 | Computers & Internet

2 Answers

I just built a new computer and when i tried to boot it up nothing happened. The Corsair ax850 PSU isn't even "humming" or giving any indication that it has power. The 110v wall plug has power....


You won't get any 'fireworks' or 'smoke', widsss.

A) Make sure the Power On switch is connected to the correct pins, in the Front Panel header on the motherboard.

(The Front Panel is the plastic front of your computer where the Power On button, HarDDrive activity LED, Power On LED, etc., is located.
The pin area on the motherboard that the Front Panel cables (Wires) plug into, is the Front Panel header)

Either you do not have
1) The correct cables (Wires) plugged into the motherboard from the Front Panel,
or,
2) A bad Power On switch,
or
3) A bad Power Supply
Even if the Power Supply is brand new, it can still be a dud.

There is a simple test to see if the problem may be the Power On switch, or the Power Supply.
After you have made sure the problem is not incorrectly attaching the wrong wires, from the Front Panel to the motherboard, reply back in a Comment, and I'll detail out the simple test for you if you wish.

ALSO:
B) Make sure the 4-pin ATX +12 volt power cable is plugged in, if your motherboard uses it.
It's power for the Processor.

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

C) Your motherboard may not use a 4-pin +12 volt power cable. It may require more power.
In this case an 8-pin EPS +12 volt power cable is used. The equivalent of two 4-pin +12 volt power cables.

http://www.playtool.com/pages/psuconnectors/connectors.html#eps8

(Note*
1) Red wires are 5 volt
2) Yellow wires are 12 volt
3) ANY Black wire you see is a Ground wire )

I await your findings.
Regards,
joecoolvette

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I am wiring my new Fahrenheat hydronic baseboard heater. I notice that inside the left endcap (and also inside the right endcap) there are TWO pairs of wires already attached together, a red with a...


Hello,For 220volt Choose which side you will connect to.Take the nut off that side black=black / white=red leave the other side alone.The manual is useless.

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Shuts off by itself used only 20 hrs and i did change oil as instructed and the oil is full I was told it may be low oil shut off switch was bad even if it is brand new unit


To be sure that the oil level switch is good or not, try the following:
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  • First disconnect one wire (if more than one) and try to crank the motor;
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If one attempt was successful, then the sensor is bad or wrong connected.
 If no attempt was successful, then the sensor may be good. Than check the fuel supply system.

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No beeps or monitor signal


Sure, a motherboard can be a dud out of the box like any other part. If you have a known good power supply, processor and memory installed, and the machine doesn't boot and you have no video, the only thing left is a non-working motherboard. Return it to the vendor and get it exchanged as defective.

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No power to my pioneer gm5300t


arcanum,

good day bro, from your Pioneer amp supply line do you also see a terminal marked as " System controller" ? did you also supply 12V DC to this terminal?

the standard power configuration for Pioneer Car amps would be:

12V Dc (+) supply / ( - ) supply ground / System Controller ( supplied by +12V DC)

12V ( + ) supply and The ( - ) supply ground is for stand by power, once you connect the supply through this terminal you will now have the stand by power but will not power on the unit even the LED power indicator.

System controller terminal, this should be supplied by ( + ) 12V line to power up the amp. this serves as the ON/OFF switch for the amp.

cheers,
mark

Jan 25, 2009 | Pioneer GM-5300T Car Audio Amplifier

1 Answer

The system fails to boot up after a new power supply was added


There should also be a brand - the nVidia just relates to the chipset that the board uses, but its OK, lets check the wiring first.  If we still have trouble I'll get you to double check for the brand name.
Lets just check that you have the following plugs in place:
  1. The 24 pin plug from the PSU (blue) to your motherboard - this powers the board itself.
  2. A 4 pin 12v P4 connector plugs into the motherboard (near the CPU).  This is the CPU power.  It runs from the 8pin blue socket on the PSU.  Make sure that the end plugging into the motherboard is only 4 pin.
  3. No power cables required to run the 8600GT so the red sockets on the PSU are empty.
  4. Power cables going to all your peripherals (hard drives and CDroms).  These run from the black sockets on the PSU.
Does your current setup match that?

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1 Answer

POWER SUPPLY FOR pc


Hi,

The simplest would be to connect the power supply to a motherboard since this is where the on/off switch is also connected. The power supply needs to be triggered on before it will operate. Plugging in power from the mains is not enough.

Alternately in most PC power supplies, you can try force triggering to turn it on with just your fan and lights connected. This is done by shorting the Green (or Gray in some) wire to the GND (black) wire on the biggest connector.

In most modern power supply designs, it needs a load across the +5V rail (latch on) to operate otherwise it will power on but then immediately switch off when it senses that there is no load connected. Sometimes this can be defeated by shorting the Orange (Power Good) wire to the Red (+5) wire.

A word of caution, some old Dell power supply as well as a few other brands do not follow the standard wiring color coding

Hope that this be of some help/idea. Pls post back how things worked out or should you need additional information.

Good luck and kind regards.

Hope that

Dec 08, 2007 | Computers & Internet

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