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Issue with a In Shin Power Supply

I took out the internal components of my boys computer it is the MSI Motherboard part # 2516512 it had a 90 watt power supply. The power supply quit working so I bought a case with a 350-Watt power supply the front panel has 16 pins on the motherboard, but the new power supply has more connectors than the motherboard has. Ive been trying to find a manual via the internet, but was unsuccessful. I know where the #1 pin is not sure the order of the pins I have the pin descriptions from the Gateway Website it's a Christmas present for my boys and I need some assistance

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Re: Issue with a In Shin Power Supply

Ok, the part # is not the model # . I need the MODEL # of the board to help U .

Posted on Jan 08, 2008

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I have a HP M8417c with a 365-Watt Power supply.

The power supply is very inexpensive and can most likely be bought from any of your computer retailers, Amazon - Just make sure to confirm the right model type of power supply. BEST to have it tested before replacing it. To make sure that is the issue..

Feb 18, 2012 | HP 365-Watt Power Supply

1 Answer

Good afternoon. I purchased the apevia, WIN-500xspx and cannot get it to power on. I have tried it both in the computer and out of the computer and it will not give any indication of powering on at...

Here are some web sites that will help you install your power supply correctly. Power supplies provide power to the motherboard and other components of a computer and need to be hooked up correctly to the components in order to give power.

May 10, 2011 | Apevia WIN-500XSPX 500-Watt Power Supply

1 Answer

I purchased a 250W Bestec Power Supply. When I plugged it in to the motherboard the light on the power supply just blinks and the computer does not turn on. I have another power supply that is the same...

did you check the switch on the back of the power supply? and is it under rated for your computer? 250 watts is much lower than what most computers use now days. the avg is 450 watt.

Jan 29, 2011 | Bestec (ATX-250-12E) 250-Watt Power Supply

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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

Technical Overview > System Board Components

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,

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)

[ 20 + 4-pin ATX main power cable, ]

2) 4-pin ATX +12 Volt power cable

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.

Oct 21, 2010 | Dell Dimension 8400 power supply ** FREE...

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I recently purchased a Dynex 400 watt atx power supply for my Dell optiplex gx280 (slim form). The reason I did this is I have a new PNY geforce 8400 GPU and my old power supply is only 160 watts (1/2 the...

Sounds like the power supply is not compatible with the motherboard. If the motherboard can't support a 400 watt powers supply you will either get a blinking light or nothing at all. Those optiplex's use a proprietory power supply because of the pin connectors and how a power supply is supposed to fit in there. If you can't find a 400 watt power supply that fits then get a hold of Dell and see if they sell one for that computer.

Sep 22, 2010 | Dynex 400-Watt ATX CPU Power Supply

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Last night I heard a loud pop sound come from my computer and then it shut down. I tried to start up the computer but it didn't turn on. None of the fans turned on either so I concluded something is wrong...

Yes, and the power supply needs replacing.
4 screws hold the power supply to the cabinet or case these are usually located outside visible at the fan vents at the four corners.

Apr 19, 2010 | Ultra Products Ultra LS500 Lifetime Series...

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Nothing on my computer was working. Screen and disks not working. On and off on power supply doesn't turn on fan. I pulled power supply out. Should the fan go by just plugging into the socket and turning...

This has to be plugged into a motherboard and the switch to it as well is controleed by motherboard so no it will not come on just by applying power. I would try another supply for you inital issue if that does not turn on then what you got here is a cable backwords or a motherboard malfuction of some type.

thanks if this helps please rate it.

Dec 19, 2009 | Antec SL300S 300W Power Supply (045176)...

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New replacement power supply makes continuous high-pitch sound

If the computer turns and works (other than the noise) then the wiring is correct. The ATX plug should be keyed so it is almost impossible to hook up incorrectly, and the wiring is for the most part standardized. However, there could be a problem if it is an older computer and your replacement power supply is from a Dell. Dell ATX power supplies, mostly from the PII to PIII era were not wired to the standard ATX pinouts. So, if you put a non-Dell power supply in an older Dell, or if you put an older Dell power supply in a non-Dell PC of any age, your wiring will not be correct. Usually incorrect wiring means either it fries or just doesn't start at all.

Specialized PC's or high end servers may also use non standard power connectors.

If you paid less than $40.00 for the power supply, the problem is most likely just a bad / poorly made power supply. Most of the budget power supplies are extremely cheaply made. They will sometimes have a lot of noise/whine/hum, and often fail quickly. In a lot of cases you will be able to tell the quality of the power supply just by the weight. The cheap ones are usually as light as can be. A good power supply will have some heft to it, as it will have large heatsinks and heavy duty components. If you have a Radio Shack nearby you could pick up a Thermaltake 300 to 450 watt power supply and try it and see if the problem goes away. They have a pretty flexible return policy. If you have a high quality power supply, it could be that you just got a bad one. Try another to confirm. If you try a Thermaltake and it still whines (and never made noise before this problem came up) then it could be that other components in the PC are near failure--possible as a result of your previously failing power supply. My experience though has been that unless the power supply popped (as in literally blew out) the motherboard and other internals aren't usually affected.
I am assuming here that the computer is starting up. If not, make sure that that all the necessary power leads are hooked up. Newer motherboards may have have a 20 or 24 pin main ATX power connector. They may also have a secondary 4-pin 12v connector to power the CPU. If you are mixing a really old or new revision power supply with an opposite age motherboard there may be a problem of not having the appropriate connections available.

Finally, if you are under-powered, you could also experience problems. What is the wattage of your new power supply and what type of computer/CPU? If you are running a 200 watt power supply to power a modern motherboard/CPU you may not be able to supply the power needed. This could result in a stressed power supply, which may make noise, or just power offs or system instability.

I very much recommend spending the extra dollars for a well made power supply. I have replaced many of the $20.00 units. Even if they say they are 350 or 450+ watts, they don't hold up. Often the computer will start random power offs and then the supply will fail completely. A good supply will usually come with a 5 year warranty and will be generally problem free.

Here is a link to a wiring diagram for the ATX plug--just to be complete.

Oct 03, 2009 | System Power Supplies

3 Answers

Gateway 3310s desk top computer power supply


You can replace the pc with the same watt power supply or upgrade to around 420W and still be able to run your system within thermal threshold. The power supply should be a 20-pin ATX power supply.

Good Luck

Aug 29, 2009 | Gateway Emachine Bestec ATX-250-12E PS...

1 Answer

Power supply won't turn on

You may have a failing motherboard or power supply unit (PSU) then. Just because a mobo has a light on it does not mean that it is getting enough power, just enough to turn that light on. Failure of motherboards and PSU's are usually due to breaking capacitors. A few years ago a capacitor company stole the "recipe" for making capacitors from another company and tried to make their own, unfortunately they did not get the ingredients right and the capacitors started breaking after 2-3 years of use. They sold these capacitors at very cheap prices and a lot of computer companies and power supply makers bought them. This is easy to diagnose. Look for capacitors (caps) (they look like little tiny soda cans) on your motherboard (mobo). They should be perfectly flat on top and not bulged or swelling or leaking anything. There is something in the computer that is not getting enough power and causing it not to start. There are a few companies that will repair broken capacitor issues, if you find that you have that problem. Also if you add a bunch of extra components without upgrading the power supply you can suffer underpowered situations and that can cause internal parts to fail. Have you added any big video cards or extra drives?
And remember a bad PSU does not mean no power, just not enough to run the computer. If you replace the PSU make sure that you replace it with one of the same or greater output watts. Output Watts should be listed on the outside of the PSU itself.
I would try another PSU first if the mobo caps looked good.

Jun 16, 2009 | (ATXPOWER400) 400-Watt Power...

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