Question about Powmax 400 Watt ATX Switching Power Supply - ATX ver. 2.03 - ATX 12V ver. 1.1 - AMD and P4 Ready (PSCM450W) Power Supply

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I have an old e machine 500 (origional operating system was windows 98). I am replacing the ATX switching power supply , 230 wat, model lp6100a. My problem is connecting it. I know all the connectors are not connected, but, I am not certian how to connect it.

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The old AT power supply that these old computers uses has two six pin socket connectors and these are different to the ATX connector.
You cannot buy these power supply now, most likely you might find one/computer in a junk shop.
If you have electronic knowledge you might be able to cut off the connectors from the old power supply and connect it to the ATX power supply and modify the ATX power supply so you can switch on the power to the old computer. The old AT power supply uses a mains power switch whereas the ATX uses low voltage to turn on the power supply.
Good luck & have fun.

Posted on Nov 29, 2008

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My power went out and when it came back on the computer would not come on


eMachines uses low quality hardware components inside their computers. This is the way they can sell them at budget prices.

One main hardware component is the low quality power supply they use.
A generic power supply made by Bestec. (A generic power supply manufacturer)

(PSU. Power Supply Unit. The type of PSU used is a SMPS.
Switched-Mode Power Supply,

http://en.wikipedia.org/wiki/Switched-mode_power_supply )

Low quality;
A) Electrolytic Capacitors (Radial Aluminum Electrolytic Capacitor)
B) Rectifier Bridge
C) MOSFET/s
D) Wiring is too small in gauge
to name a few of the components.

However IMHO it is also best to check out the Power On switch.
There is a simple test to see whether the problem is a faulty Power On switch, or a faulty Power Supply.

The test involves bypassing the Power On switch. The Power On switch is not involved in this test.
A jumper wire is used on the Soft Power On wire, [ PS-ON ], and a Ground wire in the ATX main power cable connector.

If you bypass, and the Power Supply comes on you have a bad Power On switch.
If the Power Supply does Not come on you have a bad Power Supply.
If you would like to know more in detail on how to perform this simple test, simply post so in a Comment.

The Power Supply used is just a common ATX version.
ATX refers to the Form Factor of the power supply.
Regular size ATX form factor is approximately 6 inches Wide, 5-1/2 inches Long, and 3-1/2 inches Tall. (Height)

There are also differences in the pinout of the ATX main power cable.
Yours may have 20-pins, or 24-pins.
Power Supply's sold now take this into consideration.
Their ATX main power cable can be used as a 20-pin, or a 24-pin version.

[ General example of a 20-pin ATX main power cable, and it's connector,

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

Example of a 24-pin ATX main power cable, and it's connector,

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain24

Your motherboard may also require an additional power cable, commonly referred to as a P4 power cable, or P4 ATX 12V power cable, or just ATX 12V.
The actual name is 4-pin ATX +12 Volt power cable,

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

If you would like help in finding an inexpensive reliable Power Supply, please post in a Comment.
I will need to know what Model Number of eMachine you have. It's on the back next to the Windows product key, or up on the side of the computer tower.

If you need anything explained that I have stated here, please let me know in a Comment.
Regards,
joecoolvette

Apr 21, 2011 | E-Machines Bestec ATX-300-12E Rev. D 300w...

1 Answer

Where can i get a new replacement hipro hp-a2317f3hp power supply?


You really don't want one; this is the original 230 watt supply that HP decided would last through the warranty and after that, they don't care. This supply is a very common ATX configuration and can be replaced by literally hundreds of different models. To avoid future problems, choose one of 350 or more watts which will allow it to run cooler and probably last longer than the rest of the unit.
An example of what you need is here:
Generic 350W ATX PSU
If you are concerned about 'hooking it up,' take several digital shots of the guts of your system. You will have extra connectors when your system is finished so just tuck these away so they don't interfere with fans; these are intended for future add-on devices and do not need to be connected.

Feb 24, 2011 | HP System Power Supplies

1 Answer

ANTEC MODEL SP-500 POWER SUPPLY SHORTED OUT


It is best you replace this power supply.
These power supplies have dangerous voltages inside the unit and if you do not have electronic knowledge, any mistakes you make can be fatal.

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1 Answer

I HAVE A MIRAGE MODEL NO. DR-B500E ATK 500W SWITCHING POWER SUPPLYIN MY COMPUTER AND IT HAS STOPPED OPERATING. I HAVE TRIED DIFFERENT POWER POINTS AND DIFFERENT POWER CORDS BUT THERE IS STILL NO POWER TO...


I recommend you replace the switch mode power supply. These power supplies have dangerous mains voltage inside the unit and you should not try to repair if you do not have electronic knowledge.
The cost of a 500 W ATX power supply should be approx. $100.
It is not difficult to swap out the power supply, make sure you have the power connectors are the same as the old power supply.

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2 Answers

I am looking for the model number of a power supply for an acer ax1200. I need to replace it but I can't find the model number to search for a new one.


look on google for power supplies for acer ax1200 or go to acer site. you will find when you do the google search, many sites that may have it, just do good price checking.

Feb 03, 2010 | Acer (56.04145.901) (5604145901) Power...

1 Answer

Smells like hot electrical from the power supply. which way should the round fan face in the case? Towards the motherboard or out the top. Ran system check, it is not hot. I thought it might be new and...


Is this a new ATX switch mode power supply?
If the ATX power supply is old then the capacitors may leak and overheat to give a burn't smell. I would not advise you to try and repair these power supplies, they operate with dangerous mains voltages inside the case.
The ATX power supply has standard mountings holes that line up with the desktop case and can only be fixed to the case in one position.
If you have overheating problems you can add addition 12volt fan inside case, The fan should be positioned to draw air into the case.

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1 Answer

Reinstalled windows xp on a split partition resulting memory prob


You should just be able to boot off the Windows XP cd and perform what is called a clean installation. This will format the drive and give you access to all 160 gigs of drive space.  Seems like you've already lost all your data, but that's where to go.

Apr 01, 2009 | Gateway Emachine Bestec ATX-250-12E PS...

1 Answer

Hercules switching power supply 500 wat max


yes 20 pin connecter power supply is ATX(advance technology extended )power supply and old which was low watt and 24 pin is EATX (enhaunced advance technology extended) power supply is new and high watt so 4 pin connecter can be detached from 24 pin connecter and can be fitted in 20 pin connecter

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1 Answer

POWER SUPPLY FOR E-MACHINE


disconnect CDROM,DVDROM or any player for that matter and of course any other peripheral attached so as you remain with only monitor ,mother-board,hard disk connected to the power supply.if it doesn't work repair the faulty supply.

Aug 10, 2008 | E-Machines Bestec ATX-300-12E Rev. D 300w...

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